It takes more than a billion years for a pair of galaxies to merge.
But in the constellation of Ophiuchus, about 400 million light-years from Earth, two galaxies are almost ready to become one.
The galaxies are in the process of violent…
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)…
The algorithms that played a major role in allowing a supermassive black hole to be photographed for the first time were largely designed three years ago by a graduate student in her 20s.
Katie Bouman, now 29, was studying computer science and…