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

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

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