Using a telescope typically means pointing it upward and hoping to land on something unique. You can find the moon, maybe a constellation, but after that, all those stars begin to look alike. So what ...

As the new space race continues, a team of top researchers says one thing needs to be cleared up – what exactly is a planet? In a study appearing recently in the journal Icarus, the researchers hope ...

It began the way many discoveries do — a tickling of curiosity in the back of someone’s mind. That someone was astronomer and communicator Carl Sagan. The thing doing the tickling was the trajectory ...

Discover the immense power and influence of Jupiter's gravity on our solar system and the role it plays in shaping our ...

"As the eyes, said I, seem formed for studying astronomy, so do the ears seem formed for harmonious motions: and these seem to be twin sciences to one another." — Plato, The Republic. Galileo was ...

In the end, it was the hint of life on an icy moon that doomed the Galileo spacecraft to a fiery death. This afternoon, the NASA spacecraft will end its 2.8-billion-mile odyssey with a suicidal plunge ...