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Explore Planetary Alignment, Starry Night, and more!

Planetary alignment of Venus, Mercury, and Saturn with the Giza Pyramids in Egypt. This phenomenon only happens once every 2,373-years and the next event is set for December 3, 2012, at one-hour before sunrise.

There is a place in Ireland where every two years on June 10-18 the stars line up with this bridge. It’s called heavens trail.

Iceberg. Now you know what is meant by the saying "that is just the TIP of the Iceberg"...amazing!!!!

National Geographicfrom National Geographic

Energizer Ultimate Photo Contest 2011 - Past Winners 2010

Tornado - "Placid Awe" by Zachary Caron

This is a rare meteorological phenomenon called a skypunch. When people see these, they think it's the end of the world. Ice crystals form above the high-altitude cirro-cumulo-stratus clouds, then fall downward, punching a hole in the cloud cover. #Meteorology #Weather #Clouds

Amazingly, a single day on Venus is longer than its entire year. It takes Venus 243 Earth days to completely rotate on its axis, but just 225 days to orbit the sun. Stranger still, Venus is one of two planets that rotates in reverse, a phenomenon called retrograde motion. Most theories attribute the reverse rotation to an ancient planetary collision.