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
|
|
Pentagon dismisses $1.2 trillion cost estimate for Golden Dome
Posted: Sat, May 16 9:36 AM ET (1336 GMT) Cowboy Space proposes 20,000 satellite orbital data center constellation
Posted: Sat, May 16 9:33 AM ET (1333 GMT) |
|
news links
|
|
Wednesday, May 20
Firefly Aerospace Accelerates Spacecraft Production with Expanded Campus and Innovation Lab in Central Texas
Firefly Aerospace — 4:30 am ET (0830 GMT) Sandhoo named Space Development Agency director, PAE for missile warning and tracking
Defensescoop — 4:29 am ET (0829 GMT) Vega C Deploys ESA-China Smile Satellite
Aviation Week — 4:28 am ET (0828 GMT) Sandhoo Becomes U.S. SDA Leader And Space Force PAE
Aviation Week — 4:25 am ET (0825 GMT) Peterson needs more room for workers, as Space Force plans to double in size
Colorado Springs Gazette — 4:25 am ET (0825 GMT) |
