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


Astronomers discover youngest exoplanet
Posted: Thu, Jan 3, 2008, 7:47 AM ET (1247 GMT)
TW Hydrae exoplanet illustration (MPIA) German astronomers reported this week that they have discovered the youngest extrasolar planet found to date, a world that is still embedded within the protoplanetary disk around its star. Astronomers detected the presence of the exoplanet surrounding the star TW Hydrae indirectly, using the radial velocity technique used to find most of the over 250 known exoplanets. The star itself is estimated to be only 8-10 million years old, and is still surrounded by a protoplanetary disk of dust and gas. The planet, about 10 times the mass of Jupiter, orbits in an inner gap in the disk, completing one orbit in just over 3.5 days. The discovery puts new constraints on how long it takes for planets to form around new stars.
<<previous article   next article>>
news in brief
Astronauts complete series of ISS maintenance spacewalks
Posted: Sun, Oct 22 11:28 AM ET (1528 GMT)

Blue Origin performs first test of BE-4 engine
Posted: Sun, Oct 22 11:26 AM ET (1526 GMT)


news links
Monday, October 23
First Female Pilot, Commander For NASA Speaks To Indiana Students
Indiana Public Media — 8:00 pm ET (0000 GMT)
Local retiree of NASA passes away
WJET-TV Erie, PA — 8:00 pm ET (0000 GMT)


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