Captured "mini moons" have long been theorized. This is just the second one that's been spotted.
A neighboring star is showing some unusual activity and that could mean it's about to blow.
Astronomers want to build a telescope they say would change the way we know the universe. Hawaiians are fighting to preserve their culture and land.
Binary asteroid system 1999 KW4 poses no threat of collision with our planet, scientists say.
Sunday's celestial event was the last total lunar eclipse before 2021.
The total lunar eclipse will be visible from coast to coast in the United States.
The bright green comet has arrived just in time for the holidays.
The court upheld a building permit for the $1.4 billion Thirty Meter Telescope atop Mauna Kea, a mountain considered sacred by many Native Hawaiians.