As we prepare to say goodbye to Cassini at Saturn - one of the longest-running and most awesome space missions ever - here's yet another first, a finely seen section of Saturn's inner-central B Ring, in natural color.
Space weather forecasters predicted the possibility of strong geomagnetic storms, resulting in a strong display of the aurora borealis, or northern lights … and they were right!
This large asteroid swept closest to Earth on September 1. It's big enough that astronomers are still catching it in small telescopes, as a small, slow-moving “star.”
Sunwatchers are still tracking those 2 large sunspot groups making their way across the Earth-facing side of the sun. Then yesterday there was an X-flare! Watch for possible auroras.