A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

The American Astronomical Society is calling on all nations to ban advertising in space that can be seen from the ground. Their concern is that "obtrusive ...

On this date, Jan. 29, 1859, American astronomer William Cranch Bond died. Cranch and his son, George Phillps Bond, ...

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

A retired Tucson heart doctor won a national amateur astronomy award for helping University of Arizona scientists detect some of the faintest and most confounding galaxies in the universe.

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.

The Starlink satellite reentry sparked at least 62 fireball reports to the American Meteor Society, which shared images and ...

One of the more pressing challenges is that no known mitigation strategy exists to prevent space advertising from interfering ...

For the first time, scientists witness a supermassive black hole releasing jets of material at immense speeds, offering a glimpse into jet formation and propagation in active galactic nuclei.

The intricate whorls and striations of dust that drift between the stars have just been revealed in stupefying detail.