Astronomers thought mergers formed giant elliptical galaxies. Now, for at least 24 observed galaxies, mergers have formed flattened, circular disks of dust and gas.
Posts by Deborah Byrd
NASA scientists were in the right place at the right time this summer to capture photos of a fresh landslide, caused by an Alaska earthquake.
Astronomers spent 10 years charting stars brighter than 20th magnitude – that’s about 1 million times fainter than can be seen with the human eye.
Hurricane Odile tied Olivia (1967) as the strongest hurricane to make landfall in Baja California in the satellite era.
Two powerful storms on the sun this week resulted in beautiful displays of the aurora borealis, or northern lights, that dipped down as far as the northern U.S.
No pattern in the sky is so little and yet so clearly shaped like a dipper. Look for the Pleiades late at night or before dawn. The moon is near it tonight!
The first evidence for water-ice clouds on an object beyond our solar system. It’s a brown dwarf, one of our closest neighbors, only 7 light-years away.
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.
This past full moon was the Northern Hemisphere’s Harvest Moon, known for appearing entirely or nearly full for several nights in a row.
Even as autumn is beginning, you have several more months to see the large asterism known as the Summer Triangle.