[/caption] First discovered by Charles Messier in 1764, the globular cluster Messier 9 is a vast swarm of ancient stars…
Stars come in many different sizes, colors, and types, and understanding where they fit in the grand scheme is important…
More than half the stars in our galaxy are small, dim M-class stars. Until now, researchers looking for extraterrestrial civilizations…
This is a detailed image of an exploded star called Cassiopeia A, taken by the Chandra X-Ray Observatory. The space-based…