Mars Radiation Fries Organic Compounds
September 5, 2014
Don't expect the "building blocks of life" to last very long on Mars.
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Impacts: Creators or Destroyers?
September 3, 2014
Some astronomers invest a lot of creative power in bangs, crashes and explosions.
Active Moon Triton Revisited
August 25, 2014
25 years ago today, Voyager 2 flew by Triton, a moon of Neptune, astonishing scientists with its active geology.
Moon Still Has Hot Core
August 23, 2014
Japanese scientists have determined that a soft, hot core remains in the center of the moon, contrary to expectations.
Fluffballs in Space Shouldn't Exist
August 18, 2014
A rubble-pile asteroid has such low density it should have disintegrated, but it's doing just fine.
Planet Rotation Limits Habitability
August 15, 2014
Life can't exist on a planet that rotates too fast or slow. This is another Goldilocks problem for astrobiologists to consider.
New Ways to Find E.T.
August 11, 2014
SETI researchers may not have to wait by the stellar radio dial for their imaginary friends to call in. They might eavesdrop on their pollution.
Io Volcanoes Go Hyperactive
August 7, 2014
The volcanoes on Jupiter's moon are bursting out at record rates, and nobody knows why. Is it the new normal?
Rosetta and the Stone
August 6, 2014
A historic comet rendezvous mission begins today after ten years in space.
Saturn's F-Ring Has Quieted Down
August 4, 2014
Comparing measurements over 25 years, planetary scientists have noted a drop in bright clumps in Saturn's tenuous F-ring.
Enceladus Geysers Still Unexplained
July 31, 2014
The number of geysers has topped a hundred on Saturn's overactive moon. How could they be sustained for billions of years?
Reality Check: Favored Planet Theory Dries Up
July 26, 2014
Three "hot Jupiters" sing "how dry I am," casting serious doubt on the leading theory of planet formation.
Start Over: The Evolution of Planets Is All Wrong
July 5, 2014
Ideas about planetary evolution are so far off base with observations of exoplanets, it's time to wipe the slate clean.
Keeping Titan Old
June 21, 2014
As the Cassini orbiter makes its 103rd close pass by Titan, have long-agers found ways to keep it billions of years old?
Beware of Misinterpreting Water Claims
June 16, 2014
A claim of vast reservoirs of water deep in the earth is based on indirect evidence, and likely has little or nothing to do with surface water or floods.