Curious about dark matter? Three scientists answer your questions

Why do you bet on axions or WIMPs? If you find dark matter, what are the next steps? Will we need a whole new "Dark Standard Model"? What's it like searching for something you may never find?

New rocket findings might change definition of galaxies

Galaxies might not have such discreet boundaries as we imagined. Instead, they might stretch out to great distances, forming a vast, interconnected sea of stars.

Coronal loops

The biggest sunspot region in more than two decades produced many impressive solar flares. Just before it disappeared, it also gave us this beautiful display of coronal loops.

Nevada earthquake swarm continues

The swarm began on July 12 and has increased in intensity over the past several days.

Video: Predator X, most powerful marine reptile ever

This deadly hunter had a skull twice the size of a Tyrannosaurus rex's, and a bite force unmatched by anything in the Jurassic seas. Cool video!

Astonishing image of planet-forming disk from ALMA

It looks like an artist's illustration, but it's a real image and it lets us glimpse the process by which planets are born in orbit around their stars.

Extreme weather in North America likely, thanks to Typhoon Nuri

Typhoon Nuri in the Western Pacific will likely cause extreme weather for the Northern Pacific and parts of North America in the next 5-10 days.

Bhutan’s glaciers and yak herds are shrinking

Anthropologist Ben Orlove reports from Bhutan. “Of the things that my colleagues and I hoped to see on our trek, only one was missing … ice.”

Watch the pulse of New York City, measured in tweets

Scientists observe the daily heartbeat of different areas of New York City, through the lens of Twitter.

East Tennessee early snow

Snow fell in the east Tennessee hills on the first day of November.