In the last week we've witnessed "impossible stars" do an orbital dance, bid farewell to Sally Ride and encountered vampire stars. But which story wins out? <p>Root for your favorite space news story of the week here in our latest voting round! <p>FIRST STOP: Despite Risk, Experts Bet on New Mars Rover's Audacious Landing Plan
The supposed "first habitable planet," Gliese 581g, may not be dead after all, its discoverers say. [<a href=hhttp://www.space.com/16689-mars-rover-curiosity-risky-landing.html>Full Story</a> <p>NEXT STOP: Saturn's Moon Titan May Have Seen Earth-Like Erosion
Radar images of Titan revealed an icy terrain carved out over millions of years by rivers of liquid methane, similar to how rivers of water have etched into Earth’s rocky continents. [<a href=http://www.space.com/16684-titan-moon-earth-like-erosion.html>Full Story</a> <p>NEXT STOP: Is Planet Gliese 581g Really the 'First Potentially Habitable' Alien World?
The supposed "first habitable planet," Gliese 581g, may not be dead after all, its discoverers say. [<a href=http://www.space.com/16673-gliese-581g-habitable-planet-existence.html>Full Story</a> <p>NEXT STOP: Sally Ride, 1st American Woman in Space, Dies at 61
The first American woman to travel to space, Sally Ride, has died at 61 from pancreatic cancer. [<a href=http://www.space.com/16712-sally-ride-first-american-woman-in-space-dies.html>Full Story</a> <p>NEXT STOP: Unmanned Russian Supply Ship Fails to Dock at Space Station
A robotic Russian cargo ship failed to dock at the International Space Station late Monday due to apparent failure in a new rendezvous system, NASA officials say. [<a href=http://www.space.com/16723-unmanned-russian-supply-ship-fails-to-dock-at-space-station.html>Full Story</a> <p>NEXT STOP: 'Impossible' Stars Found in Super-Close Orbital Dances
A team of astronomers have used the United Kingdom Infrared Telescope on Hawaii to discover four pairs of stars that orbit each other in less than 4 hours. Until now it was thought that such close-in binary stars could not exist. [<a href=http://cms.space.com/cms/countdowns/16808-vote-now-top-space-stories-of-the-week-july-29-2012/edit>Full Story</a> <p>NEXT STOP: Record Greenland Ice Melt Happened in Days
Greenland ice, it seems, can vanish in a flash, with new satellite images showing that over just a few days this month nearly all of the veneer of surface ice atop the island's massive ice sheet had thawed.[<a href=http://www.space.com/16746-record-greenland-ice-melt.html>Full Story</a> <p>NEXT STOP: Skydiver Leaps from 18 Miles Up in 'Space Jump' Practice
A daredevil leapt from a balloon more than 18 miles above the Earth today (July 25), moving one step closer to a so-called "space jump" that would set the record for the world's highest skydive. [<a href=http://www.space.com/16753-felix-baumgartner-space-jump-skydive.html>Full Story</a> <p>NEXT STOP: Most Massive Stars Live as Vampires in Close Stellar Pairs
The universe's most massive stars are rare, but when they are found they likely have companion stars hovering nearby. [<a href=http://www.space.com/16767-massive-stars-companions-merge-vampire-stars.html>Full Story</a> <p>NEXT STOP: San Quentin Prison Inmates Build Tiny Satellite Parts for NASA
Why do we keep sending so many probes to Mars, when the rest of the solar system's planets remain so understudied? [<a href=http://www.space.com/16777-curiosity-rover-many-mars-missions.html>Full Story</a> <p>NEXT STOP: How NASA Launched the 2012 Olympics 12 Years Ago
The NASA Ames Research Center is known for establishing innovative partnerships and Pete Worden, the former Air Force general who serves as the Center’s director, is known as a maverick. Still, the latest joint venture to come to light has caught even some longtime NASA observers by surprise. [<a href=http://www.space.com/16783-san-quentin-inmates-nasa-satellite-parts.html>Full Story</a> <p>NEXT STOP: Why Do We Keep Going Back to Mars?
2012 Olympics pins were flown on the space shuttle Atlantis 12 years ago to promote Houston's bid to host the games. [<a href=http://www.space.com/16787-olympics-2012-pins-flown-space-shuttle.html>Full Story</a> <p>NEXT STOP: Apollo Moon Landing Flags Still Standing, Photos Reveal
Photos from NASA's Lunar Reconnaissance Orbiter prove the American flags planted by Apollo astronauts still stand on the moon. [<a href=http://www.space.com/16798-american-flags-moon-apollo-photos.html>Full Story</a>