MORE
10 THINGS September 10

0 Steps to Confirm a Planet Around Another Star

So you think you found an exoplanet -- a planet around another star? It’s not as simple as pointing a telescope. Here are 10 things to know about finding and confirming exoplanets.

Image of the Week

A Farewell to Saturn

In September 2017, after more than 13 years at Saturn, NASA's Cassini spacecraft captured this last, full mosaic of the planet two days before the spacecraft's dramatic plunge into the atmosphere.

More ›

Now Playing

Jupiter's Magnetosphere

September

2018
A simplified model of Jupiter's massive magnetic field, known as a magnetosphere..
1:35 video