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A true-blue world, 63 light-years away
Earth appears blue from space because it has oceans. Planet HD 189733b appears blue because of molten glass "raindrops" blowing sideways across its surface.
July 11, 2013
Spacecraft en route to Pluto spots its largest moon
NASA’s Pluto-bound New Horizons spacecraft has spotted Pluto’s Texas-sized, ice-covered moon Charon for the first time.
July 11, 2013
As the sun moves through space …
The IBEX spacecraft has now mapped the structure of our solar system's comet-like tail. Photos in this post can help you picture how our sun carries you through space.
July 11, 2013
Video: Our solar system’s comet-like tail
Visualize the sun's tail - which space scientists call the "heliotail" - with this video.
July 11, 2013
Sun’s loops are displaying an optical illusion
New work shows that coronal loops are actually tapered, wider at the top and narrower at the ends - contrary to what our best sun photos suggest.
July 10, 2013
Astronomers witness birth of Milky Way’s most massive star
Scientists have observed in unprecedented detail the birth of a massive star within a dark cloud core about 10,000 light years from Earth.
July 10, 2013
Update on sunspot group 11 times as wide as Earth
AR1785 and AR1787 comprise one of biggest sunspot groupings of Solar Cycle 24. So far, though, the grouping has been surprisingly quiet.
July 9, 2013
Cosmochemist discovers potential solution to meteorite mystery
Chondrules may have formed from high-pressure collisions in early solar system.
July 8, 2013
Video: Mars rover watches Mars moon Phobos passing overhead
If you were standing on planet Mars, how would it look to see a Mars moon move across the sky? Well, here's how.
July 8, 2013
Space weather forecast study turns table of effective predictions on its head
A comparison of solar flare forecasting systems has turned the performance table of apparently effective prediction methods on its head.
July 5, 2013
