Planetary Science
- 			 Planetary Science Planetary ScienceExoMars mission to search for signs of life on the Red PlanetThe next mission to Mars will tally gases in the planet’s atmosphere and test technologies for a 2018 rover. 
- 			 Planetary Science Planetary ScienceMountains on Pluto are a winter wonderland of methane snowOn Pluto, methane snow blankets mountain tops. 
- 			 Planetary Science Planetary ScienceMercury’s dark secret revealedGraphite from Mercury’s primordial crust might be responsible for making the innermost planet darker than the moon. 
- 			 Planetary Science Planetary ScienceCharon’s surface cracked when ancient subsurface sea frozeA subsurface ocean on Charon, Pluto’s largest moon, might have once frozen and cracked the moon’s surface, creating some of the ridges and valleys seen today. 
- 			 Chemistry ChemistryAfter 75 years, plutonium is still NASA’s fuel of choiceOn the 75th anniversary of the discovery of plutonium, the radioactive element is still not a major source of fuel for nuclear power plants in the United States. 
- 			 Planetary Science Planetary Science120 seconds in Pluto’s shadowA 747 outfitted with a telescope worked with New Horizons to reveal details about Pluto’s atmosphere. 
- 			 Planetary Science Planetary ScienceSupport grows for a return to ice giants Uranus and NeptuneThirty years ago, Voyager 2 cruised past Uranus and then on to Neptune. Now planetary scientists think it’s time to go back. 
- 			 Planetary Science Planetary ScienceComputer simulations heat up hunt for Planet NineA giant planet in the far outer solar system could explain orbital oddities of bodies in the fringes of the Kuiper belt. 
- 			 Earth EarthEarth’s inner secrets divulged in ‘Into the Heart of Our World’A scientific journey to the center of the Earth includes just as much excitement and mystery as Jules Verne’s classic novel, a new book demonstrates. 
- 			 Planetary Science Planetary ScienceTime running out on comet landerPhilae’s days are numbered as temperatures on comet 67P drop and attempts to communicate with the lander fail. 
- 			 Planetary Science Planetary ScienceEvidence mounts for hidden ninth planetA new analysis of bodies in the Kuiper Belt strengthens the case for an unseen planet lurking in the outer regions of our solar system. 
- 			 Climate ClimateAtmospheric tides alter rainfall rateAtmospheric tides caused by the moon’s gravitational pull ever-so-slightly alter rainfall rates on Earth by producing rises and falls in atmospheric pressure.