The forces of rotation caused red hot masses of stones to be torn away from the Earth and to be thrown into the ether, and this is the origin of the stars.

— Anaxagoras 428 BC

Two-Tailed Comet Nearing Earth

Comet Lulin

A fresh new face has moved into our neighborhood, but once it swings by Earth next month, it may never come back. Comet Lulin is currently sailing through the inner solar system and is getting closer to our home planet, with its nearest approach expected in late February

Read more on National Geographic News by Victoria Jaggard