This is a satellite image of The Great Barrier Reef, Australia, collected on April (Photo DigitalGlobe via Getty Images)
This is a halo -- the radius of the inner ring to the Sun. It's the most frequently observed of the circular halos. Randomly oriented, hexagonal ice crystals in cirrus clouds are responsible for its formation.
The Aurora Borealis as seen from the International space station.
Arkaroola, SA the stunning outlook from the Acacia Ridge Walk
Envisat's Breathtaking Photos of Earth from Space
but does it float A phytoplankton bloom swirls a in the South Atlantic Ocean about 600 km east of the Falkland Islands. Different types and quantities of phytoplankton exhibit different colours, such as the blues and greens in this image, ESA
GREAT SALT DESERT, IRAN - Like poster paints run wild, this image reveals a montage of landscapes in Irans largest desert, the Dasht-e Kavir, or Great Salt Desert. The almost uninhabited region covers an area of over sq ft.