At a wind farm in Zunyi, Guizhou province, summer nights are marked by clear skies and an expanse of stars. [Photo by Wu ...

Stellar migration may greatly increase the number of habitable planets in the Milky Way. Future ESA missions will test these predictions with detailed exoplanet observations. What can the Galactic Hab ...

For centuries, scientists have puzzled over globular clusters, the dense star systems that orbit galaxies without dark matter ...

Comet 3I/ATLAS is the third ISO ever detected. It was discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) ...

In 1925, Edwin Hubble's observation of Cepheid variables in the Andromeda galaxy revolutionized astronomy, proving the ...

Most stars in the Milky Way move at steady speeds, orbiting the galactic center in regular paths. But astronomers have ...

Millky Way stars that are high and low in metallicity have been mapped by the ESA Gaia mission. [Gaia spacecraft: Mapping the ...