NROA astronomers pin down distance to Pleiades stars

National Radio Astronomy Observatory astronomers used a tried-and-true method - stellar parallax - to resolve a controversy over the Pleiades' distance.

Snowfall ahead in a warmer world, says study

An MIT study finds big snowstorms will still occur in the Northern Hemisphere despite global warming.

Report: Summer ozone to get much worse in next 35 years

A new report warns of a 70% increase in the number of days with unhealthy summertime ozone levels by the year 2050.

Yellowstone supervolcano would cover North America in ash

It's highly unlikely a supervolcano will erupt at Yellowstone National Park. But, says a new study, if one did, volcanic ash would cover North America.

Evidence for supernovas near Earth

A NASA sounding rocket has confirmed that the solar system is inside an ancient supernova remnant. Life on Earth survived despite the nearby blasts.

Best view yet of colliding galaxies in distant universe

Using telescopes on the ground and in space, astronomers have obtained the best-yet view of a galaxy collision that happened when the universe was half its current age.

Pluto-bound New Horizons crosses Neptune’s orbit

NASA says this is New Horizons' last major crossing en route to becoming the first probe to make a close encounter with distant Pluto on July 14, 2015.

Five finalists for Philae landing site on Rosetta’s comet

Five finalists named as potential landing sites this November for Philae lander in ESA's fabulous Rosetta comet mission. Comet 67P/Churyumov–Gerasimenko, here we come.

Strong 6.0-magnitude earthquake rocks San Francisco Bay area

Strong earthquake struck San Francisco Bay area early on August 24, 2014. Power outages, moderate damage across region, closed highways, serious injuries, no deaths.

Your toothpaste’s fluorine was formed in a star

Next time you're brushing you teeth, think on this: New research suggests that the fluorine in your toothpaste originates from the sun’s dead ancestors.