Planetary Science
- 			 Planetary Science Planetary ScienceEarth may be home to unearthly lifeNo need to look on other planets for new forms of life — weird life could exist right here on Earth. 
- 			 Space SpaceCosmic mysteryHigh-energy invaders from space could signal a nearby pulsar, or perhaps dark matter. By Susan Gaidos
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- 			 Earth EarthThe Hunt for Habitable PlanetsHere and now, a new suite of small telescopes are poised to look for Earthlike planets beyond the solar system. By Ron Cowen
- 			 Space SpaceWater-ice deposits found beneath Martian hillsUsing radar from an orbiting spacecraft to penetrate the hidden recesses of Mars, planetary prospectors have uncovered vast reserves of water-ice buried beneath rocky debris. By Ron Cowen
- 			 Planetary Science Planetary ScienceHuge cyclone churns at Saturn’s north polePlanetary scientists have gotten their closest look yet at polar storms on the ringed planet. These polar cyclones are big enough to engulf Earth. By Ron Cowen
- 			 Planetary Science Planetary ScienceSo close, yet so far awayAstronomers have found, in the frozen reaches beyond Neptune, two gravitationally bound objects that compose the most widely spaced binary system known in the solar system. By Ron Cowen
- 			 Space SpaceAskew in the outer solar systemA chunk of ice orbiting backwards around the sun could offer hints about the mysterious origin of some comets. By Ron Cowen
- 			 Space SpaceSniping at JupiterGiant Jupiter, often thought to protect the inner planets from space debris, may sometimes acts as a sniper, hurling material toward Earth. By Ron Cowen
- 			 Planetary Science Planetary ScienceNew angles on MercuryThe NASA MESSENGER spacecraft completed its second flyby of Mercury, yielding crisp new images of a large swath of the planet not seen before. 
- 			 Planetary Science Planetary ScienceWater’s role in Martian chemistry becoming clearerAs mission nears end, Phoenix Mars Lander finds strong evidence for minerals similar to those formed on Earth by liquid water. By Ron Cowen