Why it's so special: Galaxy clusters act as a magnifying lens, shining light on the faintest and most distant objects — a phenomenon known as gravitational lensing. On the rarest of occasions, galaxy ...

In the vacuum of space, a gunshot is not muffled by the lack of air. It is actually released with all of the explosive might of physics and chemistry, free from the limits of gravity or atmospheric ...

NASA's James Webb Space Telescope recently zeroed in on the Bullet Cluster—delivering highly detailed images that show a greater abundance of extremely faint and distant galaxies than ever before.

It's another step on the road to one day discovering what dark matter could be. NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision ...

HOUSTON — Two Russian cosmonauts began to get crucial computers up and running Friday, four days after they crashed at the international space station and curbed the outpost's ability to orient itself ...