Doubts raised about "habitable" exoplanet
Posted: Thu, Oct 14, 2010, 8:09 AM ET (1209 GMT)
An extrasolar planet with a size and orbit consistent with requirements to support life may not exist at all, astronomers said this week. Astronomers announced the discovery of the planet, Gliese 581g, late last month, with a mass as little as three times that of the Earth and an orbit that could permit the presence of liquid water. However, European astronomers said this week that they could not confirm the presence of the star in their own observations, raising doubts that the planet exists. Astronomers involved in the discovery, though, said they remain confident that Gliese 581g exists based on the combination of observations by observatories in Chile and Hawaii.
An extrasolar planet with a size and orbit consistent with requirements to support life may not exist at all, astronomers said this week. Astronomers announced the discovery of the planet, Gliese 581g, late last month, with a mass as little as three times that of the Earth and an orbit that could permit the presence of liquid water. However, European astronomers said this week that they could not confirm the presence of the star in their own observations, raising doubts that the planet exists. Astronomers involved in the discovery, though, said they remain confident that Gliese 581g exists based on the combination of observations by observatories in Chile and Hawaii.| <<previous article | next article>> |
|
news in brief
|
|
New Virgin Galactic spaceplane arrives at Spaceport America
Posted: Sat, Oct 31 10:38 AM ET (1438 GMT) |
|
news links
|
|
Thursday, November 5
Billionaire Mittal’s Satellite Ambition Pitches OneWeb Against Musk’s Starlink
Bloomberg News — 6:32 am ET (1132 GMT) Finland is building its own space command
Defence24 — 6:32 am ET (1132 GMT) Space Force chief: Intelligence officials ‘making sure we get lessons learned’ from recent Russian satellite maneuvers near commercial sat
Defensescoop — 6:32 am ET (1132 GMT) Voyager hires former Space Force Gen. Saltzman
Colorado Springs Gazette — 6:32 am ET (1132 GMT) Space Force Chief Eyes Growth in Components to Meet Operational Demand
Air and Space Forces Magazine — 6:31 am ET (1131 GMT) |
