Explore beyond the horizon.
It's easily the biggest "potentially hazardous" space rock to fly by this year but it poses no threat.
Oh, and a scorching exoplanet that probably doesn't have any air.
The moon will blush as Earth's shadow drapes over it.
An astronomer known for his controversial claim about interstellar alien probes is co-author of a fascinating new paper.
Long ago, our planet might have contributed to some water on the moon -- about enough to fill Earth's eighth largest lake, Lake Huron.