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Cassini finds a south pole vortex at Titan
A Cassini images shows a swirling mass appears to execute one full rotation in about nine hours - much faster than Titan's 16-day rotation period.
July 10, 2012
Stars are really dim!
The brightest star in the sky, Sirius, is about as bright as a 100-Watt incandescent light bulb viewed from a distance of more than 5 miles. Stars are really dim.
July 10, 2012
Magnetic portals between Earth and sun
Observations by NASA's THEMIS spacecraft and Europe's Cluster probes suggest that these magnetic portals open and close dozens of times each day.
July 9, 2012
X-flare from active region 1515 on sun
After releasing a barrage of M-class flares over the past few days, sunspot 1515 released an X-flare on July 6. Its effects might deliver a glancing blow to Earth on July 8 or 9.
July 7, 2012
Middleweight black hole found
A middleweight black hole - with a mass perhaps 20,000 times that of our sun - has reveled itself to astronomers by as it feeds on a star that has come near it.
July 6, 2012
Cassini scientists: Mystery of Saturn’s jet streams solved
The debate was whether Saturn's own internal heat - or energy from the sun - drives Saturn's jet streams.
June 26, 2012
Planetrise as seen from closest two-planet system yet found
When the two worlds are closest, say astronomers, the co-orbiting gas giant planetrise Kepler-36c would span three times more than a full moon does from Earth.
June 26, 2012
Video Voyager 1 at the edge of interstellar space
A NASA Video Voyager 1 is reporting a sharp increase in cosmic rays that may herald its final push out of the heliosphere - into the realm of the stars.
June 25, 2012
Colliding galaxies become hotbeds of star formation
These Ultra Luminous InfraRed Galaxies emit a trillion suns worth of infrared light, driven by bursts of star formation in colliding galaxies.
June 24, 2012
Desert on Mars: vastly more interior water than previously thought
Inside Mars, the amount of water may be vastly greater than previous estimates. Mars' interior - or desert on Mars - might have as much as - or more - water than Earth.
June 23, 2012
