Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's ...

U.S. National Science Foundation NOIRLab astronomers, using data from the James Webb Space Telescope and the Chandra X-ray ...

There's a universe full of black holes out there, spinning merrily away—some fast, others more slowly. A recent survey of ...