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


Astronomers find watery exoplanet
Posted: Wed, Feb 22, 2012, 7:44 AM ET (1244 GMT)
GJ 1214b waterworld illus. (STScI) Astronomers aalyzing Hubble observations have concluded one known extrasolar planet has a thick atmosphere of water vapor and likely far more water than the Earth. Astronomers discovered the planet, GJ1214b, in 2009, and observations a year later suggested that it has either at atmosphere of water vapor or a haze layer. Follow-up infrared observations by Hubble as the planet transited its star confirmed the presence of water vapor in the atmosphere, based on the lack of features observed over a range of infrared wavelengths. The planet is a so-called "super Earth" with a diameter 2.7 times that of the Earth and seven times as massive. The resulting density suggests the planet has a larger fraction of water than the Earth.
<<previous article   next article>>
news in brief
FCC revokes Starlink subsidies
Posted: Sun, Aug 14 12:29 PM ET (1629 GMT)

SpaceX hits 3,000 Starlink satellites launched
Posted: Sun, Aug 14 12:28 PM ET (1628 GMT)

China launches 16 remote sensing satellites
Posted: Sun, Aug 14 12:27 PM ET (1627 GMT)

news links
Monday, August 15


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