coondoggie writes "NASA today said it has selected six mission proposals that could end up being future missions that explore the Earth's thermosphere and ionosphere, the sun, black holes, the first stars, and Earthlike planets around nearby stars. After a detailed review of the six proposals — each of which will get $750,000 to conduct a six-month feasibility study — NASA will pick two of the mission applications in the spring of 2009 for full development. The first mission could launch by 2012. Both will launch by 2015. Mission costs will be capped at $105 million each, excluding the launch vehicle. The awards are part of NASA's Small Explorer (SMEX) Program which offers flight opportunities for highly focused and relatively inexpensive space science missions, NASA said. SMEX spacecraft are 400 to 550lbs with orbit-average power consumption of 50 to 200 watts, NASA states on the SMEX Web site.
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