A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

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Exoplanets have captured the imagination of public and scientists alike and, as the search continues for more, researchers ...

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found ...

The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...

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

Astronomers have detected fast-repeating radio bursts from a distant "dead" galaxy that should not contain the energy to ...

Astronomers have traced two mysterious fast radio bursts from space to wildly different places, which suggests the phenomenon ...

The Hubble Space Telescope completes a high-resolution portrait of our galaxy's gorgeous neighbor, which will help scientists better understand our Milky Way.

Around 2015, astronomers took on the painstaking task of stitching together Hubble Space Telescope images of this galaxy, but that effort had focused on the galaxy's northern half. Still, however, the ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...