The researchers used data from the European Space Agency's Gaia space observatory that has tracked more than a billion stars in our galaxy with unprecedented precision. There are 21 known ...

Until now, there was no reason to imagine that a small ... the supermassive black hole at the center of the galaxy. But at least 21 hypervelocity stars detected are consistent with being ejected ...

University of Arizona astronomers have learned more about a surprisingly mature galaxy that existed when the universe was ...

There is apparently a supermassive black hole in the Milky Way's largest satellite galaxy that is hurling hyper-fast stars into our home galaxy. This is what a research group led by Jiwon Jesse ...

The presence of very hot gas is no surprise ... to ultracold temperatures that can then form stars. For the Phoenix cluster's central galaxy, which should be well past the stage of extreme ...