Former Cold War rivals Russia and Pakistan are moving forward with their first-ever joint military exercises, an event that signals the two nations are working more closely together to combat terrorism in their respective countries.
The exercise is small in size – only 70 Russian soldiers and officers joining 130 Pakistani counterparts. But the implications are huge.
Called Friendship 2016, the Russian troops arrived in Rawalpindi on Friday aboard an Ilyushin Il-76 military transport plane, according to Radio Pakistan. The exercise will continue through October 10.
“It is planned that the Russian and Pakistani military servicemen will share their experience and employ teamwork in fighting in mountainous areas, particularly destroying illegal armed groups,” the Russian news service TASS reported.
TASS also reported that personnel from a mechanized infantry unit of the Russian Southern Military Command’s Mountain Mobile Brigade are part of the exercise.
“The Southern Military Command’s mechanized infantry servicemen are fully equipped and have their mountain gear with them, as well as ammunition for their standard weapons,” TASS stated, quoting the military command’s media service.
The exercise’s name is symbolic, indicating a lessening of tensions between Moscow and Islamabad that started last year when Russia lifted its arms ban against Pakistan.
The result was the sale of four MiG Mi-35 attack helicopters – the first sale of its kind between the two countries – to help replace Pakistan’s aging fleet of U.S.-made AH-1 Cobras. In addition, Pakistani army, navy, and air force representatives visited Russia during the last year to consult with their opposite numbers.
This is in stark contrast from the days when Pakistan under the leadership Muhammad Zia-ul-Haq was an ally of the United States that helped transport arms and men into the fight against Soviet forces after the 1979 invasion of Afghanistan. In recent years, the relationship between the U.S. and Pakistan cooled after Washington accused Islamabad of turning a blind eye to Taliban fighters using Pakistan as a refuge.
Pakistan denies that it is sheltering the Taliban. In the meantime, the United States improved ties with India, Pakistan’s bitter enemy.
At first, the location of at least some of the war games was both in doubt and controversial. Initial reports indicated that the exercises would be held in what the United Nation’s calls Pakistan-administered Kashmir, an area on the border between India and Pakistan marked by tension since 1947.
Pakistan calls the area Azad Kashmir; India refers to the area as Pakistan-occupied Kashmir.
According to a clarification issued by the Russians, “The Russia-Pakistan anti-terror exercise is not being held and will not be held in any point of so-called ‘Azad Kashmir’ or in any other sensitive or problematic areas like Gilgit and Baltistan. The only venue of the exercise is Cherat.”
Cherat is about 34 miles southeast of Peshawar and located at about 4,500 feet in the Khattak Range. It serves as a base for the Special Services Group, the primary special operations force of the Pakistan Army.
Meanwhile, Russia is still moving forward with long-standing joint exercises with India called Indra 2016, hosting more than 500 Indian soldiers in Vladivostok. Russia and India have held the counterterrorism exercises together since 2003.
The Army recently demonstrated extended ranges for the guided multiple launch rocket system, and two 155mm cannon artillery precision munitions.
Aligning with the Army’s top priority — Long-Range Precision Fires — these changes support the force’s need for both close and deep-strike capabilities against a near-peer adversary.
Last fall, the Army conducted demonstrations of the new XM1113 and Excalibur M982 munitions from a prototype Extended Range Cannon Artillery, or ERCA self-propelled howitzer
The XM1113 Insensitive Munition High Explosive Rocket Assisted Projectile is slated to replace the Army’s aging M549A1 rounds. Currently, the M549 rounds can reach about 30 km.
The XM1113 reached 72 km during a demonstration, said Rich Granitzki, Long-Range Precision Fires Science and Technology Advisor for Combat Capabilities Development Command, or CCDC, at Picatinny Arsenal, New Jersey.
The XM1113 consists of a high fragmentation steel body with a streamlined ogive, the curved portion of a projectile between the fuze well and the bourrelet, and a high performance rocket motor. The projectile body is filled with insensitive munition high explosive and a supplementary charge. On gun launch, propellant gases initiate a delay device that will ignite the rocket motor, boosting velocity at an optimal time in the trajectory to maximize range.
(US Army photo)
Similarly, the Excalibur M982 is a Global Positioning System-guided, extended-range artillery projectile, supporting the Army’s next generation of cannon artillery.
During a limited-range test, the M982 exhibited an increase in range, going from 40 to 62 km, Granitzki added.
Moving forward, ammo modernization and improvements to cannon technologies will play a vital role in optimizing these and other armaments technologies to reach “extended ranges and to get increased rates of fire,” Granitzki said.
“We are still maturing our demonstrators, component technology and subsystems, in advance of future demonstrations to transition our systems to programs of record,” he added.
The Army has also made improvements to the XM30 Guided Multiple Launch Rocket System, or GMLRS, nearly doubling its range.
The current XM30 rocket is a GPS-guided high-speed rocket equipped with small wing-like controls on the nose of the projectile to enhance accuracy. The XM30 system has an advertised range of 70 km, said Mike Turner, fire support capability area lead supporting CCDC Aviation Missile Center.
To extend the XM30’s range, the Army moved the control fins to the rear of the device, Turner said. In addition to the tail controls, the Army redesigned the nose of the rocket to make it aerodynamic, equipped the device with a light-weight composite motor, and added propellant.
Guided Multiple Launch Rocket System.
(US Army photo)
In result, the new Tail Controlled Guided Multiple Launch Rocket System, or TC-G, reached 139 km during a demonstration at altitude.
“This takes a product that exists in the Army’s inventory and nearly doubles the range,” he said. “By moving the control surfaces to the rear, we’re giving it more control, maneuverability, and range.”
To support the new device, the Army fabricated a composite smooth-bore tube, ensuring a clean launch for the guided rocket,” said Brett Wilks, a TC-G program manager.
In theory, these tubes could be retrofitted to existing launch systems, resulting in no significant impact to current Army software or hardware, he added
CCDC completed the science and technology phase of the program in September 2018. The Army looks to transition the program to an initial operating capability in the next couple of years, Turner said.
“It is our mission at CCDC AvMC to look at future concepts and reduce risk. We showed the Army what’s capable for long-range missile systems,” he added.
A Coast Guard member became the second woman in its history to receive the Silver Lifesaving Medal.
Petty Officer 2nd Class Victoria Vanderhaden, a boatswain’s mate at Coast Guard Sector Mobile, received the medal for saving two swimmers off the coast of Long Island Sound, New York.
Vanderhaden received the medal in July. Photo courtesy of Facebook.
“It was 2018 and I had just moved to New York and was trying to hit every beach in the area. I hadn’t been to Fire Island yet but heard the sunset there was amazing. I have the surf report app on my phone and it said it was going to be six feet. There were people and beach deer everywhere. … But I saw two guys pretty far out in the water and it was like a washing machine out there [with the waves],” Vanderhaden said.
She says she slowly grew more alarmed as she watched and heard someone on the shore yelling “ayúdenme.” Although she couldn’t understand the Spanish word, Vanderhaden sensed something was wrong. Turning to the couple next to her, she asked if they knew what that word meant. They did: Help me.
Turning to the couple next to her, she asked if they knew what that word meant. They did: Help me.
Vanderhaden immediately headed to the water, instructing people to call the police and the nearby Coast Guard station. She took off her shoes, sweater and started swimming. The rip current was so strong, it pulled her to the first man pretty quickly. Since the other man in the water was in more trouble being further out, she let the first know she’d be back for him and to try to stay afloat.
“When I got to the next guy, he was freaking out and climbing on me a lot. I was propping him up on my knee, holding him and telling him it was going to be okay. I don’t even know if he could understand me. Finally, he calmed down and I started swimming with him, pulling and pushing him. Then, we got to the second guy and that’s when things got hard,” Vanderhaden said.
When she reached the second man in the water, he began grabbing at her in obvious terror. Managing him while also keeping the other man and herself above water was a struggle. It took about 10 minutes just to calm them down.
“I started pushing one and pulling the other. I couldn’t see the beach because it had gotten dark and the waves were so high. We finally made it to shore and then the guys were hugging me and thanking me,” Vanderhaden said.
She found out later they were in the water almost 45 minutes.
Once she finished giving her statement to the police, she called her senior chief who was the OIC of her assigned duty station. Vanderhaden just briefly told them she had to talk to police but didn’t go into detail of what happened.
The police thought she was assigned to Coast Guard Station Fire Island but she was actually part of Coast Guard Station Eatons Neck. For about a week, they couldn’t figure out who she was and the sector jokingly started referring to her as the “Ghost Coastie.” It wasn’t until her mom happened to overhear some of the story that the dots finally got connected back to Vanderhaden.
“It was about a week before anyone knew it was me,” Vanderhaden said with a laugh.
Roughly two years later, she received the Silver Lifesaving Medal, with the presenting officer being a familiar face: her father. Vanderhaden’s father, Master Chief Petty Officer of the Coast Guard Jason M. Vanderhaden, is the top senior enlisted leader for the Coast Guard. Her brother currently serves too.
“For me, the other military branches making fun of us is one thing but I feel people [the public] think we are just police officers on the water. But it’s so much more than that,” she said.
Petty Officer 2nd Class Victoria Vanderhaden with her parents. Courtesy photo.
Vanderhaden’s father has served since 1988, making the culture of the Coast Guard all she’s ever known. She was asked if she thinks she would have jumped in to rescue the men if she hadn’t been a coastie.
“That’s a difficult question, because I don’t know anything but the Coast Guard. In my world and for all of people I live with and work around — all of us would do the same thing,” she said.
Then she added a recent conversation she had with a retired Coast Guard master chief who told her that some people think and some people do. He then said, the people who join the Coast Guard do.
John Bolton, President Donald Trump’s national security adviser, announced on May 5, 2019, that the US would send the USS Abraham Lincoln aircraft carrier and its associated strike group to the waters near Iran to “send a message” and respond to vague threats.
But the US will be sending the powerful carrier to a job it’s arguably ill-suited for, putting thousands of sailors at a major military disadvantage. And if a conflict were to arise, the sinking of a US aircraft carrier would be in Iran’s sights.
Though the carrier’s deployment to Iran’s nearby waters may have been planned long ago, Bolton has been clear that the ship’s return to the region marks a response to “a number of troubling and escalatory incident and warnings” from Iran.
While Bolton did not get into specifics, a report from Axios said Israel passed the US “information on an alleged Iranian plot to attack” US forces or interests in the region.
The Wall Street Journal cited US officials as saying new intelligence “showed that Iran drew up plans to target U.S. forces in Iraq and possibly Syria, to orchestrate attacks in the Bab el-Mandeb strait near Yemen through proxies and in the Persian Gulf with its own armed drones.”
US aircraft carrier strike groups represent the highest order of naval power ever put to sea, but they’re not the right tool for every job.
Caitlin Talmadge, an associate professor of security studies, said on Twitter that US carriers are “designed for operations on the open ocean.”
As a floating air base with guided-missile destroyers and cruisers sailing nearby for anti-missile defenses from land and sea, the carriers are best off when moving around far from the range of missiles fired from ashore.
The narrow, “confined waters of the Persian Gulf make carriers tremendously more vulnerable to asymmetric air, land, and naval threats,” wrote Talmadge.
Iran’s home field advantage could sink a tanker
In the shallow, brown waters of the Persian Gulf and the Strait of Hormuz, the narrow pass through which about a fifth of the world’s oil passes through, Iran’s outdated submarines and missiles see a vastly uneven playing ground leveled out.
“Ideally, a Nimitz class carrier would operate within comfortable range of its targets (based on the range of its air wing) but at sufficient stand-off distance to minimize the risk of enemy threats,” Omar Lamrani, a senior military analyst at Stratfor, a geopolitical consulting firm, told Business Insider. “This varies based on operating environment, but is usually between 300 to 400 nautical miles.”
Aircraft carriers do send a message, and have been relied on for such by presidents for decades, but according to Talmadge, it’s kind of empty in this situation.
The USS Abraham Lincoln makes a sharp turn at sea.
In the Gulf wars, or against militants like ISIS, aircraft carriers made plenty of sense.
“Iraq has tiny coast, couldn’t contest US carrier presence, so unusual situation,” continued Talmadge, who pointed out that Iran was a different kind of beast.
But “Iran’s geography military capabilities, particularly presence of significant assets near Strait of Hormuz, make sailing carrier through Gulf a lot riskier, and w/ less benefit given US ability to deploy carriers in Arabian Sea Indian Ocean instead,” she said.
In fact, the Persian Gulf, Iran’s home waters, plays directly into their hands. One of Iran’s favorite and best documented ways to harass the US Navy is to use fast attack boats in a swarming attack.
Swarm boat attacks, would “not be much of a danger in the open sea,” where the carrier had room to maneuver, but could be a problem in the choked gulf.
“Iran has various systems that can be a threat within the Persian Gulf, including anti-ship cruise missiles, fast attack craft and swarm boats, mini-submarines, and even asymmetric tactics like UAV swarms that seek to harass rather than disable the carrier,” Lamrani continued.
Iran’s Ghadir submarine behind a US carrier strike group in a propaganda video.
(Iranian TV via MEMRI)
Aircraft carriers lack onboard defenses against torpedoes, something that an old Iranian submarine could manage. In the noisy brown waters of the Persian Gulf, the US Navy may also struggle to track such small boats.
Furthermore, Iranian media has fantasized for years about sinking an aircraft carrier. In the country’s state-controlled media, the massive ships are often seen as targets ripe for sinking.
With US-Iranian relations hitting a startling new low, the Trump administration’s decision to send an aircraft carrier to Tehran’s home waters seems a risky choice with little apparent payoff.
Accompanying the carrier deployment announced by Bolton was an increase in bombers in the region. As Business Insider reported before, Iran is highly unlikely to attack even small, exposed groups of US troops in the region because the response from nearby US airbases would all but obliterate the country.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
The Air Force Nuclear Weapons Center received formal approval in late October 2018 to enter the production phase for the B61-12 nuclear gravity bomb’s new guided tail-kit assembly, or TKA.
“This marks the completion of a highly successful development effort for the tail kit,” said Col. Dustin Ziegler, AFNWC director for air-delivered capabilities.
The AFNWC program office recently passed the Air Force review of the weapon system’s development and received approval to end its engineering and manufacturing development phase and enter the next phase for production of the tail kit. In the production phase, the testing environment will more closely approach real-world environments.
Known as Milestone C, the decision to enter this next phase marked the completion of a series of developmental flight tests. The program office completed a 27-month test program in less than 11 months, with 100 percent success for all of its 31 bomb drops. The accelerated schedule, as well as other risk mitigation strategies, enabled the program office to save more than 0 million in development costs, according to Ziegler.
A frontal view of four B-61 nuclear free-fall bombs on a bomb cart.
(DoD photo by Phil Schmitten)
“The flight tests demonstrated the system works very well in its intended environment,” said Col. Paul Rounsavall, AFNWC senior materiel leader for the B61-12 TKA, Eglin AFB, Florida. “This development effort brought the first-ever digital interface to the B61 family of weapons and demonstrated the B61-12 TKA’s compatibility with the Air Force’s B-2 and F-15 aircraft. In addition, the TKA achieved greater than five times its required performance during developmental testing and is ready to start initial operational test and evaluation.”
The Department of Energy’s National Nuclear Security Administration is responsible for the B61-12 nuclear bomb assembly. The Air Force is responsible for the B61-12 TKA, joint integration of the bomb assembly and TKA into the “all-up-round” of the weapon, and its integration with aircraft.
Headquartered at Kirtland AFB, AFNWC is responsible for synchronizing all aspects of nuclear materiel management on behalf of Air Force Materiel Command and in direct support of Air Force Global Strike Command. The center has about 1,100 personnel assigned to 18 locations worldwide, including Eglin AFB; Hanscom AFB, Massachusetts; Hill AFB, Utah; Kirtland AFB; and Tinker AFB, Oklahoma, in the U.S. and Ramstein Air Base in Germany.
The reign of the Union of Soviet Socialist Republics (or USSR) came to a screeching halt in 1991. After 68 years of reign, the collective of socialist countries were dissolved and reformed into new borders and republic entities.
This month, we look back on the August Coup, when Soviet Communists failed their takeover, and eventually, to the dissolution to the Soviet Union as a whole.
Take a look at the best memes we found commemorating this important event in world history.
India’s Navy is considering adding to its fleet of P-8I maritime patrol aircraft, as the country shifts its military posture toward its southern approaches out of concern about Chinese naval activity.
India’s Naval Chief Adm. Sunil Lanba told India Strategic magazine that aerial-surveillance capability was an important part of navy operations, and the country’s Defense Ministry has said the P-8I is able to provide “a punitive response and maintaining a watch over India’s immediate and extended areas of interest.”
New Dehli made its first purchase of the aircraft in 2009, not long after the November 2008 terrorist attack in Mumbai, during which attackers arrived by boat. India bought eight P-8I aircraft at the time, deploying them in 2013. It followed that with a purchase of four more in 2016, buying them at the 2009 price.
“A number of measures have been taken since ’26/11′ to strengthen maritime, coastal, and offshore security by the concerned agencies in the country,” Lanba said, including expanding maritime security forces’ capabilities, enhancing surveillance in maritime zones, and streamlining intelligence-sharing.
While Lanba did not say how many long-range maritime reconnaissance aircraft, like the P-8I, the Indian navy would ultimately require, his predecessors have said as many as 30.
The P-8I, which is India’s variant of Boeing’s P-8 Poseidon aircraft, has some of the most sophisticated anti-submarine-warfare technology available, including Raytheon and Telefonics systems that provide 360-degree radar coverage. The plane also has a magnetic anomaly detector, which searches for shifts in the earth’s magnetic field created by a submarine’s hull.
The aircraft can carry Harpoon anti-ship missiles, depth charges, Mk-54 torpedoes, and rockets. The Indian variant also has specific communications software and Identify Friend or Foe abilities, allowing it to interoperate with Indian naval and air force systems. They can also data-link with Indian submarines to share information about target vessels.
‘Our Navy is fully capable and ever ready’
Anti-submarine warfare has become a focal point for the Indian military, and the U.S. and India have held talks about related technology and tactics. Both countries have become increasingly wary of Chinese naval activity, particularly Chinese submarines, in recent years.
China has also expanded its infrastructure in the region, including a presence at ports in Djibouti, Pakistan, and Sri Lanka.
India has been tracking Chinese submarines entering the Indian Ocean since 2013, and a 2015 U.S. Defense Department report confirmed that Chinese attack and missile submarines were operating there.
In mid-2016, Indian naval officials said they were sighting Chinese subs four times every three months on average.
“As a professional military force, we constantly evaluate the maritime security environment in our areas of interest. We lay a lot of stress on Maritime Domain Awareness,” Landa told India Strategic when asked about hostile submarines operating in the Indian Ocean.
“Accordingly, we are fully seized of the presence and likely intentions of all extra-regional forces operating in the Indian Ocean,” Landa said. “Our Navy is fully capable and ever ready to meet any challenges that may arise in the maritime domain.”
‘A tectonic shift’
Some sightings of Chinese subs have taken place around the Andaman and Nicobar Islands, which sit near the Malacca Strait, through which more than 80% of Chinese fuel supplies pass.
New Delhi started deploying P-8I aircraft and spy drones to the islands in early 2016, with plans to develop enough infrastructure and maintenance capabilities there to support a division-level force of about 15,000 troops, a fighter squadron, and some major warships. Other reports suggest India is considering installing an “undersea wall” of sensors in the eastern Indian Ocean.
Growing activity in the Indian Ocean, as well as the ocean’s centrality to global trade and India’s own security, have led New Delhi to shift its focus to the country’s 4,700-mile southern coastline, where security and energy infrastructure are concentrated.
“This is a tectonic shift in India’s security calculus, that it has to protect its southern flank,” Brahma Chellaney, a strategic-studies professor at the Center for Policy Research, told The New York Times in July 2017, around the time of the Malabar 2017 naval exercises between the U.S., India, and Japan.
India has done naval patrols and anti-submarine warfare exercises with partners in the region — in November, India, the U.S., Japan, and Australia announced the creation of the Quadrilateral Security Dialogue, or Quad, defense partnership. New Delhi has also looked to expand its military, spending tens of billions of dollars on foreign fighter jets, armored vehicles, and naval vessels.
Subs have become of particular interest for India in light of growing Chinese naval activity in the region, according to India Strategic.
The Kalvari, the first of six diesel-electric attack submarines designed by a French firm and built in India, was commissioned in December. Prime Minister Narendra Modi called the Kalvari a marquee example of the “Make in India” initiative, which aims to develop India’s domestic arms industry through collaboration with foreign firms.
The navy, citing concerns about China, has called for a third nuclear-powered carrier that incorporates U.S. technology and is pushing ahead with plans to acquire such a carrier at an expected cost of nearly $25 billion.
The plan includes a component of 57 fighter aircraft, for which U.S. F-18s and French Dassault Rafales are being considered. Aircraft acquisitions may push the price higher.
The expense of acquiring such a ship has given India’s Defense Ministry pause, however, though others have argued that aircraft carriers are the best way to counter threats around the region.
“As India does not have a policy of overseas basing, a carrier force remains the only suitable alternative for a regional power like India to conduct out-of-area contingencies,” retired Indian Vice Adm. Shekhar Sinha wrote in December 2016.
The Indian navy has one operational carrier, INS Vikramaditya, which is a Russian Kiev-class carrier-cruiser overhauled by Moscow for the Indian navy between 2004 and 2013. The Vikramaditya operates Russian-made aircraft, including MiG 29K fighters, which India has asked Russia to “ruggedize” for carrier operations. The INS Vikrant, which is India’s first domestically built carrier, is under construction.
In what appears to a sign of the Indian navy’s move toward the U.S. and away from Russia, American naval officials from a joint working group were invited aboard the Vikramaditya in late October to assess ways to transition Indian carriers to U.S. naval operational concepts, according to India’s Business Standard.
The Air Force is buying a new bomber, dubbed the B-21 Raider, which has generated a lot of headlines and is considered one of the biggest priorities for the service. However, another program may be just as important – even if it doesn’t get the press.
According to an interview that TheCipherBrief.com had with retired Lt. Gen. Dave Deptula, who was one of the primary planners of the Desert Storm air campaign, that program is the Long-Range Stand-Off weapon, or LRSO. In plain terms, it is a new cruise missile.
While the BGM-109 Tomahawk cruise missile is perhaps the most famous – and perhaps the most widely-used cruise missile since Operation Desert Storm – the Air Force has had a pair of cruise missiles it launched from its bombers for about four decades. They were the AGM-86 Air-Launched Cruise Missile and the AGM-129 Advanced Cruise Missile.
While some might argue that the B-2 and B-21 stealth bombers make cruise missiles unnecessary, Deptula said that was not the case. In fact, they make the stealth bombers more potent.
“The LRSO, when carried by B-21s, will enable simultaneous target attacks against several targets from one aircraft, with multiple cruise missiles making defense against this combination highly problematical,” he said. “This combination strengthens deterrence by presenting an adversary an intractable challenge.”
One of the biggest factors in making that challenge intractable is that the bombers are able to attack from just about any point on the compass. In essence, the cruise missiles would enable a B-21 to hit multiple targets from unexpected directions.
Older bombers like the B-52 and B-1B will also be able to use LRSO as well, with Deptula explaining that they would thus “add mass to an attack” against an adversary. The missile is planned to enter service in 2030 according to FlightGlobal.com, and will feature both nuclear and conventional warheads.
If you’ve ever been driving on a long road trip, you might know the horrifying feeling of being drowsy and nodding off behind the wheel — even for a moment.
Your heart drops into your stomach when you realize what happened. Now imagine waking up in an F-16 flying straight to the ground while approaching supersonic speed.
A trainee pilot conducting basic fighter maneuver training with the Arizona Air National Guard suffered G-LOC, or gravity-induced loss of consciousness, while in a roll. The student hit 8.3 Gs and passed out.
The Air Force released this newly declassified video from the aircraft’s heads-up display on September 13th, which shows the plane’s Automatic Ground Collision Avoidance System kick on to save the pilot, who was still unconscious after 22 seconds.
The video is harrowing as the worried instructor repeatedly yells at the pilot, almost begging him to recover.
According to Aviation Week’s Guy Norris, this is the fourth save from the Auto-GCAS since it was introduced to the Air Force in 2014. The computer uses pre-programmed terrain info against a prediction of the plane’s trajectory. The GCAS autopilot takes over when the prediction touches the ground.
In this case, the GCAS took over at just 8,760 feet. The student then wakes back up and retakes control at 4,370 feet.
A female Marine officer was dropped from the Marine Corps’ Infantry Officer Course when she failed to complete a ruck march for the second time. The unidentified Marine was the 30th woman to attempt the course. Two male officers dropped out during the same ruck march.
While this is the 30th female Marine to drop out of training, she will be the first to be allowed to re-attempt the course. Only officers seeking an infantry MOS are allowed to restart the course. Previous female candidates were destined for non-infantry jobs and so were not allowed to repeat.
Secretary of the Navy Ray Mabus maintains that the standards will not be dropped so that women can make it through the course.
“I will never lower standards,” Mabus said. “Let me repeat that: Standards will not be lowered for any group! Standards may be changed as circumstances in the world change, but they’ll be changed for everybody.”
A black hole and its shadow have been captured in an image for the first time, a historic feat by an international network of radio telescopes called the Event Horizon Telescope (EHT). EHT is an international collaboration whose support in the U.S. includes the National Science Foundation.
A black hole is an extremely dense object from which no light can escape. Anything that comes within a black hole’s “event horizon,” its point of no return, will be consumed, never to re-emerge, because of the black hole’s unimaginably strong gravity. By its very nature, a black hole cannot be seen, but the hot disk of material that encircles it shines bright. Against a bright backdrop, such as this disk, a black hole appears to cast a shadow.
The stunning new image shows the shadow of the supermassive black hole in the center of Messier 87 (M87), an elliptical galaxy some 55 million light-years from Earth. This black hole is 6.5 billion times the mass of the Sun. Catching its shadow involved eight ground-based radio telescopes around the globe, operating together as if they were one telescope the size of our entire planet.
“This is an amazing accomplishment by the EHT team,” said Paul Hertz, director of the astrophysics division at NASA Headquarters in Washington. “Years ago, we thought we would have to build a very large space telescope to image a black hole. By getting radio telescopes around the world to work in concert like one instrument, the EHT team achieved this, decades ahead of time.”
To complement the EHT findings, several NASA spacecraft were part of a large effort, coordinated by the EHT’s Multiwavelength Working Group, to observe the black hole using different wavelengths of light. As part of this effort, NASA’s Chandra X-ray Observatory, Nuclear Spectroscopic Telescope Array (NuSTAR) and Neil Gehrels Swift Observatory space telescope missions, all attuned to different varieties of X-ray light, turned their gaze to the M87 black hole around the same time as the EHT in April 2017. NASA’s Fermi Gamma-ray Space Telescope was also watching for changes in gamma-ray light from M87 during the EHT observations. If EHT observed changes in the structure of the black hole’s environment, data from these missions and other telescopes could be used to help figure out what was going on.
Chandra X-ray Observatory close-up of the core of the M87 galaxy.
(NASA/CXC/Villanova University/J. Neilsen)
While NASA observations did not directly trace out the historic image, astronomers used data from NASA’s Chandra and NuSTAR satellites to measure the X-ray brightness of M87’s jet. Scientists used this information to compare their models of the jet and disk around the black hole with the EHT observations. Other insights may come as researchers continue to pore over these data.
There are many remaining questions about black holes that the coordinated NASA observations may help answer. Mysteries linger about why particles get such a huge energy boost around black holes, forming dramatic jets that surge away from the poles of black holes at nearly the speed of light. When material falls into the black hole, where does the energy go?
“X-rays help us connect what’s happening to the particles near the event horizon with what we can measure with our telescopes,” said Joey Neilsen, an astronomer at Villanova University in Pennsylvania, who led the Chandra and NuSTAR analysis on behalf of the EHT’s Multiwavelength Working Group.
Chandra X-ray Observatory close-up of the core of the M87 galaxy.
(NASA/CXC/Villanova University/J. Neilsen)
NASA space telescopes have previously studied a jet extending more than 1,000 light-years away from the center of M87. The jet is made of particles traveling near the speed of light, shooting out at high energies from close to the event horizon. The EHT was designed in part to study the origin of this jet and others like it. A blob of matter in the jet called HST-1, discovered by Hubble astronomers in 1999, has undergone a mysterious cycle of brightening and dimming.
Chandra, NuSTAR, Swift and Fermi, as well as NASA’s Neutron star Interior Composition Explorer (NICER) experiment on the International Space Station, also looked at the black hole at the center of our own Milky Way galaxy, called Sagittarius A*, in coordination with EHT.
Getting so many different telescopes on the ground and in space to all look toward the same celestial object is a huge undertaking in and of itself, scientists emphasize.
“Scheduling all of these coordinated observations was a really hard problem for both the EHT and the Chandra and NuSTAR mission planners,” Neilsen said. “They did really incredible work to get us the data that we have, and we’re exceedingly grateful.”
Neilsen and colleagues who were part of the coordinated observations will be working on dissecting the entire spectrum of light coming from the M87 black hole, all the way from low-energy radio waves to high-energy gamma rays. With so much data from EHT and other telescopes, scientists may have years of discoveries ahead.
This article originally appeared on NASA. Follow @NASA on Twitter.