Planetary Science
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Planetary ScienceSolar craft get into position
With the assist of gravitational boosts from the moon, twin spacecraft have completed a series of maneuvers that will enable them to take three-dimensional images of the sun.
By Ron Cowen -
Planetary ScienceStellar death may spawn solar system
Material shed by a dying star might give birth to planets.
By Ron Cowen -
Planetary ScienceFrom the January 2, 1937, issue
The beauty of snow, a very large number, and a robot brain machine.
By Science News -
Planetary ScienceThe Big Picture: Cassini spies Titan’s tall mountains
A spacecraft has discovered the largest mountains known on Titan, Saturn's smog-shrouded moon.
By Ron Cowen -
Planetary ScienceCraft reveals Martian site of ancient water
The distribution of materials in this composite image of the Nili Fossae region of Mars tells scientists that water resided there no more recently than nearly 4 billion years ago. Green indicates clay minerals that formed in a wet environment. Red depicts the mineral olivine, which formed about 3.8 billion years ago, according to the […]
By Ron Cowen -
Planetary ScienceSigns of recent water on Mars
Pictures showing fresh deposits of bright material on two Martian gullies provide the most compelling evidence yet that water flowed on parts of the Red Planet during the last few years.
By Ron Cowen -
Planetary ScienceSo long, Surveyor
After 8 years of relaying pictures, topographic maps, magnetic field data, and compositional information from above the Red Planet, NASA's Mars Global Surveyor spacecraft appears to have called it quits.
By Ron Cowen -
Planetary ScienceHowdy, Neighbors: Long-term study finds a batch of red dwarfs
Astronomers have found 20 previously unknown star systems that lie within 33 light-years of Earth.
By Ron Cowen -
Planetary ScienceJovian storm grows stormier
Jupiter's Little Red Spot has become as strong as its big brother.
By Ron Cowen -
Planetary ScienceSatanic Winds
Dust devils send prodigious amounts of dust into Earth's atmosphere, and on Mars the electric fields generated by the dusty vortices may actually stimulate changes in atmospheric chemistry that sterilize the soil.
By Sid Perkins -
Planetary ScienceA sunrise view of Mars
The first high-resolution images sent by the Mars Reconnaissance Orbiter support the notion that water once flowed across much of the Red Planet.
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Planetary ScienceRing Shots
With the sun poised behind Saturn, the Cassini spacecraft recently got a unique view of the rings' icy dust particles, enabling it to discover two new rings and confirm the presence of two ringlets.
By Ron Cowen