Vote Now! Top Space Stories of the Week - Dec.4, 2011

From the discovery of 18 new planets to a tour of Spaceport America, it was a busy week in space. <br><br> Vote for your favorite space story of the week.
NASA launched a huge new Mars rover from Florida Saturday in a $2.5 billion mission to explore the Red Planet. [<a href="http://www.space.com/13738-nasa-mars-rover-curiosity-msl-launch.html">Read More</a>]
President Obama, Vice President Biden, and many science team leaders signed a plaque affixed to NASA's Mars rover Curiosity for its journey to Mars. [<a href="http://www.space.com/13742-curiosity-mars-rover-signatures-plaque.html">Read More</a>]
The recent rash of new moons found around Pluto raise questions about how safe NASA’s New Horizons craft might be as it enters the system. [<a href="http://www.space.com/13752-pluto-moons-horizons-spacecraft-danger.html">Read More</a>]
The Air Force's secretive X-37B space plane is about to set a record for the time its spent in space, reaching the maximum orbital lifetime predicted for it originally. [<a href="http://www.space.com/13763-x37b-sercret-air-force-space-plane-record-time.html">Read More</a>]
The third season of the TV show Meteorite Men premieres tonight at 9pm on the Science Channel. SPACE.com chatted with Geoff Notkin, one of the hosts of the show, about the upcoming season and the art of hunting for meteorites. [<a href="http://www.space.com/13753-meteorite-men-geoff-notkin-interview.html">Read More</a>]
With assistance from Earth’s magnetic field, the Fermi Gamma-ray Telescope confirmed a cosmic excess of antimatter positrons, but not an expected drop off, which means the result is inconclusive as evidence of dark matter. [<a href="http://www.space.com/13775-dark-matter-results-cast-doubt.html">Read More</a>]
A step was missed in procedures to make sure NASA's new Mars rover didn't carry biological contamination to Mars. [<a href="http://www.space.com/13783-nasa-msl-curiosity-mars-rover-planetary-protection.html">Read More</a>]
A checklist that flew on NASA's 1970 Apollo 13 moon mission sold for a huge price, while other items on offer were seized by NASA because they were still property of the space agency. [<a href="http://www.space.com/13786-space-artifacts-auction-nasa-ownership.html">Read More</a>]
NASA's far-off Voyager spacecraft have observed a signal from the Milky Way galaxy usually only seen in distant galaxies outside our own. [<a href="http://www.space.com/13795-natural-nuclear-reactors-planets-spark-life.html">Read More</a>]
SPACE.com reporter Clara Moskowitz visits the world's first purpose-built commercial spaceport, Spaceport America, a half-built dream to transform a desolate stretch of scrub brush into the worldwide capital of the commercial space industry. [<a href="http://www.space.com/13802-spaceport-america-private-space-industry.html">Read More</a>]
Astronomers have discovered 18 huge new alien planets, using Hawaii's Keck telescope. [<a href="http://www.space.com/13810-eighteen-huge-alien-planets-keck-telescope.html">Read More</a>]
The European Space Agency announced today (Dec. 2) that it will stop trying to contact the beleaguered Russian Phobos-Grunt spacecraft, which has been stuck in the wrong orbit for almost a month now. [<a href="http://www.space.com/13810-eighteen-huge-alien-planets-keck-telescope.html">Read More</a>]
