Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Astronomers solve 20-year-old quasar mystery
New works suggests most observed quasar phenomena depend on two things: how efficiently a central black hole is being fed and the astronomer's viewing orientation.
September 11, 2014
Harvest Moon trilogy
This past full moon was the Northern Hemisphere's Harvest Moon, known for appearing entirely or nearly full for several nights in a row.
September 11, 2014
Home is behind, the world ahead
A mesmerizing view down a long, straight stretch of road, with a wild sky above.
September 10, 2014
Why our Milky Way galaxy has fewer satellites than expected
European cosmologists and particle physicists come together to tweak an accepted model of how cold dark matter helps build galaxies in our universe.
September 9, 2014
Craters have appeared on two glaciers in Iceland
The recent volcano eruptions in Iceland have created enormous circular depressions in two of the country’s glaciers.
September 9, 2014
A preliminary map of different regions on Rosetta’s comet
The comet turns out to be a unique, multifaceted world. We now know comets can have cliffs, depressions, craters, boulders or even parallel grooves.
September 9, 2014
Moonlets are born and quickly die in Saturn’s F ring
Tiny moons, no bigger than large mountains, may coalesce and collide with the densest part of the ring, creating luminous knots. But the moons don't last long.
September 9, 2014
What’s the source of a mysterious ozone-depleting chemical?
The Montreal Protocol put the brakes on ozone-depleting chemicals 30 years ago. But one compound is still abundant in Earth’s atmosphere. Where's it coming from?
September 8, 2014
California blue whales rebound from whaling
In a conservation success story, the number of California blue whales has rebounded to near historical levels after being hunted to near extinction.
September 8, 2014
Milky Way and moonset
Reflections of the moon and the Milky way in a pond atop Independence Pass in Colorado's Rocky Mountains
September 8, 2014
