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


Astronomers use new technique to discover small exoplanet
Posted: Fri, Oct 25, 2002, 8:59 AM ET (1259 GMT)
Astronomers announced this week that they have used a new technique to find the smallest extrasolar planet discovered to date. The astronomers, from the University of Rochester, matched clumps of dust observed around the star Epsilon Eridani to computer models of what that dust would look like if a planet was orbiting the star. They concluded that Epsilon Eridani has a planet one-tenth the mass of Jupiter orbiting the planet at an average distance of about 40 astronomical units (6 billion kilometers), completing one orbit every 280 years. This planet is the smallest discovered to date; it could not have been detected using the radial velocity technique because of its small mass and distant orbit. Astronomers had previously discovered another planet only slightly smaller than Jupiter in a closer eccentric orbit.
<<previous article   next article>>
news in brief
Rocket Lab opens Launch Complex 3 for Neutron
Posted: Sat, Aug 30 10:33 AM ET (1433 GMT)

Two launch companies win contracts for European program
Posted: Sat, Aug 30 10:28 AM ET (1428 GMT)

SpaceX flies Falcon 9 booster for 30th time
Posted: Sat, Aug 30 10:27 AM ET (1427 GMT)

news links
Sunday, August 31
LunaGrid-Lite Completes Critical Design Review, Flight Model Underway
Astrobotic Technology Inc. — 10:55 am ET (1455 GMT)


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