There are more stars in the universe than grains of sand on Earth. The latest estimates suggest there are around one septillion stars, which is a 1 followed by 24 zeros. Our sun is a typical G-type ...

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 ...

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