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Black holes with ravenous appetites
Both Type I and Type II active galaxies have central, supermassive black holes, which consume the galaxies from within. But new work suggests the black holes in Type Is eat faster.
September 27, 2017
How fast is our universe expanding?
Here's a great New ScienceCast video about the controversial Hubble Constant. It's the key to knowing the age of our universe and much more.
September 26, 2017
Fast radio bursts firing every second?
New theoretical work indicates at least 1 fast radio burst, or FRB, going off somewhere each second. It contradicts the idea that FRBs might be evidence of an alien technology.
September 25, 2017
Sun photobombed Mars encounter with comet Siding Spring
Comet Siding Spring swept closer to Mars than any known comet in recorded history, creating the largest-ever-known meteor shower. But the sun got in on the act.
September 24, 2017
How well can seeds survive in space?
If humans want to live on Mars, we're going to need to grow food. How well can seeds survive harsh, non-Earth conditions?
September 23, 2017
Astronomers find strange, comet-like double asteroid
Comets are loose collections of ice and dust, sometimes with long tails. Asteroids are more rocky or metallic. Now astronomers have found a comet-like double asteroid.
September 23, 2017
Earth will give this spacecraft a gravity boost today
OSIRIS-REx - bound for a 2018 encounter with asteroid Bennu - will sweep in close to Earth on Friday. It'll be closest today just before 16:52 UTC (12:52 p.m. EDT).
September 22, 2017
Mercury’s poles icier than thought
The scorching hot surface of Mercury - our sun's innermost planet - seems an unlikely place to find ice. But a new study suggests otherwise.
September 21, 2017
More evidence of water on Mars
Planetary researchers say a large sedimentary basin, named Aeolis Dorsa, contains some of the planet’s most spectacular and densely packed river deposits.
September 21, 2017
Aging star blows off smoky bubble
A strikingly beautiful view of a delicate bubble of expelled material around the exotic red star U Antliae helps astronomers understand how stars evolve during the later stages of their life-cycles.
September 20, 2017
