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


Hubble finds carbon dioxide on exoplanet
Posted: Wed, Dec 10, 2008, 8:12 AM ET (1312 GMT)
Hubble illustration of exoplanet HD 189733b (NASA) Astronomers using the Hubble Space Telescope have detected evidence of carbon dioxide in the atmosphere of an extrasolar planet, a step forward in the search for evidence of life. Hubble's near infrared camera and spectrometer studied light from HD 189733b, a "hot Jupiter" extrasolar planet closely orbiting a star 63 light-years away. Because of the orientation of the planet's orbit, the planet passes behind the star as seen from Earth, allowing astronomers to subtract light from just the star itself from times the star and planet are both in view, thus allowing astronomers to measure the infrared light emitted from the planet's hot interior. That light contained the spectral signature of carbon dioxide absorbing specific wavelengths of light as it passed through the planet's atmosphere. While this planet is thought to be far too hot to support life, but demonstrates the ability to detect this gas for other, more promising planets.
<<previous article   next article>>
news in brief
Antenna problem postones TDRS-M launch
Posted: Sun, Jul 23 10:16 AM ET (1416 GMT)

SpaceX no longer planned powered Dragon landings
Posted: Sun, Jul 23 10:14 AM ET (1414 GMT)


news links
Wednesday, August 23
In Pursuit of the Perfect Spacesuit
Air & Space — 6:45 am ET (1045 GMT)
Mars Fakers: Can we learn anything by pretending?
Air & Space — 6:44 am ET (1044 GMT)


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