A diagram of our location in the observable universe
Light in the universe
9 Physics Questions Baffling Scientists [INFOGRAPHIC]
From dark energy and string theory to the end of the Universe, these are the unanswered cosmic conundra that are still baffling scientists.
Comparing Sizes of the Largest Objects in the known universe - Take a journey through the cosmos, and see some of the largest objects that we've discovered.
nice Solar Eclipse From the International Space Station...
A rising sun and Earth's horizon are featured in this image photographed by an Expedition 13 crewmember on the International Space Station. Credit: NASA
Rockport Harbor, Mass.
6 Quantum Physics Facts That Make You Question Your Very Nature
Grand Canyon: Mouth of Havasu Creek