Amateur astronomer captures detailed images of the Alligator and Whirlpool galaxies from his backyard observatory
Planet Nine? Astronomers have discovered a potential ninth planet far beyond Neptune, but not everyone is convinced
New images hint that doomed Soviet spacecraft plummeting to Earth may have already deployed its parachute: Latest news on 'Cosmos 482'
Eta Aquarid meteor shower to peak Monday night: How to see 'shooting stars' left behind by Halley's comet
'It's huge and it's been hidden all this time': The giant glowing cloud 'Eos' is one of the largest formations in the sky and we've never seen it before
'This is the answer to one of the questions of the century': Scientists may finally know where the oldest gold in the universe came from