In A Nutshell A star 3,260 light-years away dimmed by over 95% for six months, one of the longest stellar blackouts ever ...

It's hard to imagine Saturn without its glorious, extensive, complicated rings. Yet, when the Cassini probe arrived to study the planet in 2004, it made a curious discovery: the ice chunks and ...

Things are much bigger outside the solar system.

Now, they can say just how large. It's the biggest in the solar system. In a study Wednesday in Nature, scientists concluded that the faint ring known as the Phoebe ring is 270 times the size of ...

We preselected all newsletters you had before unsubscribing.

Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, icy, egg-shaped planet in the far reaches of our solar system, beyond Neptune ...