There are sunsets on other planets even more spectacular than the ones on Earth. What if we could see not just one, but two suns falling below Earth’s horizon? Would our planet get much warmer with ...

A massive upheaval in the Saturnian system could have also led to the moon Hyperion.

THE scientist known for discovering water on a distant planet has been mysteriously shot dead on his front porch. Carl ...

Six planets—including Venus, Jupiter, and Mercury—will line up in the sky. Here’s the best time to watch and where to find clear views.