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

AD: H2M 2015

Astronomers estimate over 100 billion planets in Milky Way
Posted: Sat, Jan 5, 2013, 8:45 AM ET (1345 GMT)
An extrapolation based on data from NASA's Kepler spacecraft has led astronomers to conclude that there are at least 100 billion, and perhaps 200 billion, planets orbiting stars in the Milky Way galaxy. The team of Caltech astronomers based their analysis on the discovery of five planets orbiting a star designated Kepler-32, an M-class star that is among those being observed by NASA's Kepler planet-hunting spacecraft. Using the probability that the Kepler-32 system would be oriented in a way that allowed its detection, astronomers concluded that there is an average of one planet per star in the Milky Way, or at least 100 billion planets; taking into account planets orbiting stars at greater distances than those spotted around Kepler-32 could double that total, scientists said. The new estimate closely matches previous estimates, but is the first to take into account planets orbiting M-class stars, which account for approximately three-quarters of the stars in the galaxy.
<<previous article   next article>>
news in brief
SpaceX launches Dragon, just misses first stage landing
Posted: Thu, Apr 16 2:05 PM ET (1805 GMT)

ULA unveils Vulcan launch vehicle plans
Posted: Thu, Apr 16 1:51 PM ET (1751 GMT)

news links
Friday, April 17
NewSat Seeks Bankruptcy Protection
Space News — 7:36 am ET (1136 GMT)
NewSat asks US court to save satellite deal
The Australian — 7:24 am ET (1124 GMT)
NewSat and Bob Hawke the satellite spruiker
Sydney Morning Herald — 7:22 am ET (1122 GMT)
Satellite company NewSat plunges into administration
Australian Financial Review — 7:21 am ET (1121 GMT)
NewSat falls into administration
ZDNet News — 7:21 am ET (1121 GMT)


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