Over time, these stars became known as Wolf-Rayet stars (Charles Wolf was a French astronomer, and helium was first detected by the French scientist Georges Rayet and others), and astronomers came to ...

Hubble captures three infant stars lighting up a blue nebula, with a secret protostar forming in a shadowed disc below.

Dinosaurs may have gazed upon a sky subtly different from our familiar blue, according to NASA scientist Jessie Christiansen.

Five years of imagery from NASA's Transiting Exoplanet Survey Satellite (TESS) have been stitched together to create an all-sky and northern & southern ecliptic mosaics. Credit: NASA/MIT/TESS and ...

Browse 160+ clip art of a sunrise free stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Young woman doing yoga ...