So many arches! The Three Dollar Bridge in Montana makes up the foreground of this shot, with the much more massive arc of the Milky Way above it.
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.
A bridge in Montana, the Milky Way behind it. Photo: © Jake Mosher 
