spacetoday.net: space news from around the webin association with SpaceNews

Twin NASA spacecraft to crash into the Moon on Monday
Posted: Fri, Dec 14, 2012, 6:59 AM ET (1159 GMT)
GRAIL illustration (NASA) Two NASA spacecraft that have been studying the Moon's gravitational field since the beginning of the year will end their mission by crashing into the lunar surface on Monday. The twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft, dubbed "Ebb" and "Flow", will crash into a mountain in the Moon's northern polar regions at 5:29 pm EST (2229 GMT) Monday, the two impacts taking place 20 seconds apart. The spacecraft are running low on propellant needed to maintain their orbits, and the controlled crash is to ensure that the spacecraft don't instead hit one of the "heritage" sites elsewhere on the Moon associated with Apollo and other past missions. The impact site will be in shadow at the time of the impacts and thus no visible phenomena are expected. The two spacecraft, which entered lunar orbit at the beginning of 2012, have provided scientists with the best map yet of the Moon's gravity field, which in turn has provided insights on the Moon's interior structure.
<<previous article   next article>>
news in brief
Curiosity detects methane "spikes" in Martian atmosphere
Posted: Wed, Dec 17 7:41 AM ET (1241 GMT)

Proton launches Russian communications satellite
Posted: Tue, Dec 16 6:59 AM ET (1159 GMT)

NASA receives $18 billion in 2015 spending bill
Posted: Tue, Dec 16 6:47 AM ET (1147 GMT)

news links
Wednesday, December 17
Private Moon racers to get extra year to finish
Engineering and Technology Magazine — 7:12 am ET (1212 GMT)
Google Lunar XPrize Deadline Extended To 2016
IEEE Spectrum — 7:11 am ET (1211 GMT)
Pittsburgh team gets XPrize awards, but contest's future in doubt
Pittsburgh Tribune-Review — 7:09 am ET (1209 GMT)
Astrobotic and CMU land $750,000 in race to moon
Pittsburgh Post-Gazette — 7:09 am ET (1209 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list