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

Reaction wheel glitch temporarily suspends Kepler operations
Posted: Mon, Jan 21, 2013, 6:52 AM ET (1152 GMT)
Kepler spacecraft illustration (NASA/Ames) NASA's Kepler spacecraft is suspending science operations for ten days to rest a reaction wheel that showed signs of wear, project officials said late last week. One of three operating reaction wheels showed signs of increased friction in operations earlier this month, a symptom of wear that could lead to the loss of the wheel. Kepler uses reaction wheels to maintain its attitude and requires three working wheels for normal operations. One of four wheels on the spacecraft failed last year, raising concerns about the spacecraft's health. During this ten-day rest period the wheels will not be used, and spacecraft thrusters will keep the spacecraft properly pointed, although science observations will be suspended during this time. Kepler, launched nearly four years ago, is now in an extended mission, observing more than 100,000 stars to look for evidence of planets orbiting them.
<<previous article   next article>>
news in brief
Air Force and SpaceX settle lawsuit
Posted: Sat, Jan 24 9:57 AM ET (1457 GMT)

Scientists release initial results from Rosetta
Posted: Fri, Jan 23 7:10 AM ET (1210 GMT)

Russia plans to merge space agency with industry
Posted: Thu, Jan 22 6:47 AM ET (1147 GMT)

news links
Saturday, January 24
Cosmic radio burst caught red-handed
CAASTRO — 5:53 pm ET (2253 GMT)
Square Kilometre Array: The Cosmology Engine
Max-Planck-Institut — 5:53 pm ET (2253 GMT)
Probing the Universe with the Square Kilometre Array
Square Kilometer Array — 5:52 pm ET (2252 GMT)
An exceptionally powerful trio in the Large Magellanic Cloud
Max-Planck-Institut — 5:19 pm ET (2219 GMT)


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