Dozens of new exoplanets discovered
Posted: Tue, Oct 20, 2009, 6:58 AM ET (1058 GMT)
Astronomers announced Monday the discovery of over 30 new extrasolar planets, bringing the total number of such worlds found to date to 400. The discoveries, 32 in total, were made by a state-of-the-art instrument at the European Southern Observatory in Chile, which found the exoplanets by detecting minute, periodic shifts in stellar spectral lines caused by orbiting planets. A number of the discoveries are around stars that are "metal-deficient", setting constraints on the amount of heavy elements needed for planet formation. Astronomers now estimate that at least 40 percent of solar-type stars have low-mass planets.
Astronomers announced Monday the discovery of over 30 new extrasolar planets, bringing the total number of such worlds found to date to 400. The discoveries, 32 in total, were made by a state-of-the-art instrument at the European Southern Observatory in Chile, which found the exoplanets by detecting minute, periodic shifts in stellar spectral lines caused by orbiting planets. A number of the discoveries are around stars that are "metal-deficient", setting constraints on the amount of heavy elements needed for planet formation. Astronomers now estimate that at least 40 percent of solar-type stars have low-mass planets.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Wednesday, August 12
Firefly Now Targeting Next Alpha Flight By Year’s End
Aviation Week — 4:54 am ET (0854 GMT) 'Russian Starlink' Is Fast Becoming A Reality, There's Just One Problem For The Kremlin
Radio Free Europe — 4:52 am ET (0852 GMT) Firefly Aerospace Announces Extension of Multi-Launch Agreement with Lockheed Martin Through 2031
Firefly Aerospace — 4:50 am ET (0850 GMT) Firefly’s SciTec Awarded $94 Million U.S. Space Force Contract to Advance Ground-Based Radar Digitization Program
Firefly Aerospace — 4:49 am ET (0849 GMT) Registration Now Open for Spacepower Conference 2026
EINPresswire.com — 4:49 am ET (0849 GMT) |
