History

This is the legacy of Sputnik 1, the world's first satellite launched into orbit

Just 60 years ago, there were no man-made objects above the planet Earth. Now, there are nearly 500,000 objects circling over Earth in various orbits. These include debris, inactive, and active satellites.


The tiny Sputnik, which means "satellite" or "fellow traveler" in Russian, was the first man-made satellite to be launched into Earth's orbit on Oct. 4, 1957, and it changed the course of human history.

This handout October 1957 NASA image shows a technician putting the finishing touches on Sputnik 1, the first artificial satellite. Photo from NASA.

The 58cm diameter, 83.6kg metallic orb, with four antennae that transmitted radio pulses, that was launched by the Soviet Union heralded the space race between the USSR and the US - ushering in an era of scientific advances, not only in military, but also in communications and navigation technologies.

There are approximately 1,500 active satellites currently orbiting the Earth. Modern society is heavily dependent on satellite technology, which is used for television and radio broadcasting, telephone calls, GPS navigation, mapping, weather forecasting, and other functions.

A map of currently tracked satellite objects. Photo courtesy of Wikimedia Commons.

Class of satellite orbit

Class Altitude Orbital period Common usage
Low Earth Orbit 80km - 1,700km 2 hrs Communications, Earth observation, development (International Space Station, Hubble Space Telescope)
Medium Earth Orbit 1,700km - 35,700km 2 - 24 hrs Navigation (GPS, GLONASS, Galileo)
Geosynchronous Orbit 35,700km 24 hrs Broadcast, Weather
Elliptical Orbit Variable Variable Communications (Sirius Satellite Radio)

The Hubble Space Telescope in orbit. Photo from NASA.

The US share of satellites

US government and private entities own over 40 percent of all satellites currently in orbit. Most operational satellites currently in orbit are for used for communications, Earth observation, technology development, navigation, and space science.

They have lifetimes ranging from months to 30-plus years after launch.

Humor

These old Navy training videos on how to flirt are hilariously bad

The National Archives hosts countless educational films that have come from the military throughout the ages. If you want to learn about declassified nuclear testing, they've got it. If you want to learn how to properly resist communist propaganda, they've got that, too. If you want to learn the 1960's way of wooing women, you better believe the U.S. Military has wasted money on making those videos, too.

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Articles

How R. Lee Ermey's Hollywood break is an inspiration to us all

While there have been many outstanding actors and celebrities who have raised their right hand, there has never been a veteran who could finger point his way to the top of Hollywood stardom quite like the late great Gunnery Sergeant R. Lee Ermey.

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Podcast

Combat poetry reveals what life is like on the Afghan front lines

Justin Eggen had some things stuck in his head for a long time during — but especially after — his two deployments to Afghanistan. These thoughts became poems and short stories that reflected his feelings and personal experience as a Marine in Marjah and in Afghanistan's Sangin Valley. They are Eggen's way of handling the overwhelming series of emotions from and memories of his time there.

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Military Life

7 things grunts think about on watch in fighting holes

If nothing else has made you question your choice to join the infantry before, digging a fighting hole definitely will. It's always miserable, it's extremely time consuming, and there's always a giant rock waiting for you once you're halfway down. But, once you get that hole dug, it's smooth sailing. Now, all you have to do is deal with the sleep deprivation and crummy weather.

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History

That time US troops found 200 tons of stolen Nazi gold

In the closing months of World War II, the defeated Nazi Army scrambled to hide the hundreds of tons of gold they had despicably stripped from various nations during their occupation. As they hurriedly stashed their ill-gotten gains, they were unaware that the Allies were drawing near.

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Lists

10 military spouses you should unfriend on Facebook immediately

Often, there comes a point when people decide to give their Facebook friends list an overhaul.

They completely change their social landscape online by avoiding accepting friend requests from certain types of people, and they give their current friends list a good, hard scrub.

Everyone has their reasons. Maybe they're doing it for security purposes, or because a handful of people's posts drive them crazy or they want to keep a more professional profile. Military spouses in particular might do so because they want to focus on positive, stress-free relationships – that is, the ones that bring wine, wear sweat pants, and check judgment at the door.

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GEAR & TECH

This JASSM variant could replace the Harpoon

For a long time, the AGM-84/RGM-84 Harpoon missile has been the primary anti-ship weapon of the United States military. Over the years, with improvements, it's successfully held the line. But, as is perpetually the case, time and technological advances have forced the U.S. Military to look for a missile with even more reach and punch.

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Entertainment

7 Marvel Cinematic Universe movies to watch before 'Infinity War'

Not planning a two-day Marvel Cinematic Universe marathon right before seeing "Avengers: Infinity War?"

Nobody has time for that.

To accommodate fans who want to freshen up their knowledge, we collected a list of the most essential MCU movies to watch right before you see "Infinity War," which is scheduled for release April 27, 2018.

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