Thorne-Żytkow objects that we haven't yet seen. There is, however, more to learn about these stars and the cosmos.

All-around performances, top scorers and more led the way for this week's standouts. Vote for your favorite performance.

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

SNR 0519 is a supernova remnant (SNR) made up of thin, blood-red shells of gas. It is the remnant of a star that exploded as a supernova about 600 years ago. This image, shows Supernova 1987a (center) ...

A Triple Star System Yields an Unusual Surviving Star Unlike our Sun, which exists alone, at least half of the stars in our ...