More aurorae! Here, in Alberta, Canada, the Northern Lights are an ectoplasmic blur above the sharp horizon line of trees. A lake on the bottom half the photograph mirrors the eerie light.
Whether your budget is $10 or $1,300, we've got tech and gear recommendations that will make the new semester more productive and entertaining.
NASA's Hubble Space Telescope found definitive evidence of a dwarf galaxy merging with the Milky Way just 2 billion years after the Big Bang.
Don't look up.
The cosmic accelerator can push protons beyond one quadrillion electric volts.
The observatory recently began its 10-year survey of the southern sky using the world's largest digital camera.
The otherwise invisible object revealed itself with a flash of light as it munched on its stellar dinner.
