Two new stamps feature Webb images of our amazing universe. The U.S. Postal Service issued them on January 22, 2024, to celebrate Webb's incredible mission.
Astronomers have discovered the oldest-known black hole. It dates back more than 13 billion years, to when the universe was only 400 million years old.
A new study analyzed the motions of satellite galaxy pairs around a large galaxy group and showed the universe may be younger than the standard model predicts.
Planetary scientists knew there were massive buried deposits near Mars' equator, but not what they consisted of. New research found that it's buried water ice.