Get a look at a sun dog, a haboob, mammatus clouds, dust devils, a derecho and other weird atmospheric phenomena.
Month in Space: May 2013
Check out the top space shots of May 2013 — including glimpses of glittering galaxies, a satellite view of a tornado's birth and a portrait of a spacewalker at work.
2013's top underwater shots
Click through the best pictures from the University of Miami's 2013 Annual Underwater Photography Contest, hosted by the Rosenstiel School of Marine and Atmospheric Science.
Return of the cicada
Take a closer look at the curious 17-year life of the flying bug as the East Coast prepares for an invasion.
The World at Night 2013
The winners of the 2013 "Earth and Sky" photo contest show off the beauties of the night sky and demonstrate the effects of light pollution.
Robots that slither, crawl, walk, fly — and rock
Today's robots are rapidly gaining skills to help at home or in the factory, from flipping pancakes to slithering behind dangerous machinery. Some can even jam on the guitar.
Antics and artistry of astronaut Chris Hadfield
Canadian spaceflier Chris Hadfield has posted incredible pictures of the world from space. He has also explained how to brush your teeth, shave and clip your nails while weightless.
More Tech / Science slide shows
Art of Science 2013
Click through the top images from Princeton University's Art of Science Competition, which features images of artistic merit created during the course of scientific research.
Our fragile Earth
Images from outer space highlight the fragility — and the resilience — of our beautiful blue planet.
Catch the coolest comets
Cast your eyes on pictures featuring PanSTARRS, Hale-Bopp and other crowd-pleasing comets.
Striking sinkholes: Earth opens up
A look at some of the most amazing sinkholes around the world.
Lights in the sky
Click through stunning images of the auroral displays created by geomagnetic storms.