For most of human history, the Milky Way has been a hazy band of light, a backdrop rather than a map. Now, by reading the chemistry of individual stars from within the disk itself, astronomers are ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Neutrinos are one of the most mysterious particles in the universe, often called "ghost particles" because they rarely ...

An idea about the sun’s magnetic field called the terminator model could help predict dangerous space weather more accurately ...