How the Moon Formed: Violent Cosmic Crash Theory Gets Double Boost (This image depicts the catastrophic collision of two planetary bodies similar in composition that led to the formation of the Earth and its moon billion years ago.
This Week's Night Sky: Catch an Exploding Star Backyard astronomers are reporting that a nova is quickly coming back to life in the constellation Sagittarius. How to spot it? Start your hunt before dawn.
Human Body Ingredients via imaginaryfoundation: 'The average human has approximately 100 trillion cells and each cell is made of approximately 100 trillion atoms, each of which were originally created in the center of a star.
Herschel's Andromeda Image Credit: ESA/Herschel/PACS & SPIRE Consortium, O. Krause, HSC, H. Linz Explanation: This infrared view from the Herschel Space Observatory explores the Andromeda Galaxy, the closest large spiral galaxy to our own Milky Way.