By: NASA/JPL-Caltech/STScI/CXC/SAO 5149 users
This false-color image from three of NASA's Great Observatories provides one example of a star that died in a fiery supernova blast. Called Cassiopeia A, this supernova remnant is located 10,000 light-years away in the constellation Cassiopeia. At the center of this orb, visible only as a tiny turquoise...
By: iStockPhoto 4026 users
This album contains 7 different photos of planets which change according to the day of the week.
By: Romain Guy 3771 users
Sunset over the foggy hills of the Bay Area in California.
By: Romain Guy 2781 users
Series of colorful lights hanging from a tree in a street of Kyoto, Japan.
By: iStockPhoto 2762 users
This album contains 7 different photos of mountains which change according to the day of the week.
By: Romain Guy 2497 users
Tenaya Lake, a gorgeous lake found at 8,000 ft in Yosemite National Park, California.
By: NASA/JPL-Caltech/STScI 2239 users
NASA's Spitzer and Hubble Space Telescopes have teamed up to expose the chaos that baby stars are creating 1,500 light-years away in a cosmic cloud called the Orion nebula. This striking infrared and visible-light composite indicates that four monstrously massive stars at the center of the cloud...
By: iStockPhoto 1930 users
This album contains 7 different photos of beaches and oceans which change according to the day of the week.
By: iStockPhoto 1867 users
This album contains 6 different photos of oceans which change according to the time of day.
By: Colinate 1300 users
Cook's Bay (Moorea, polynesia), probably one of the most beautiful bays in the world ...