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Latest HD 189733 b Stories

gas giant planet HD 209458b
2014-07-24 07:35:40

J.D. Harrington, NASA Headquarters, Washington Astronomers using NASA's Hubble Space Telescope have gone looking for water vapor in the atmospheres of three planets orbiting stars similar to the sun -- and have come up nearly dry. The three planets, known as HD 189733b, HD 209458b, and WASP-12b, are between 60 and 900 light-years away from Earth and were thought to be ideal candidates for detecting water vapor in their atmospheres because of their high temperatures where water turns...

Unexpected And Exotic Characteristics Of Hot Jupiters
2013-08-19 04:42:11

[ Watch the Video: The Strange Attraction of Hot Jupiters ] redOrbit Staff & Wire Reports - Your Universe Online The number of exoplanets discovered by astronomers since the beginning of the Space Age some five decades ago suggests there are possibly over 100 billion such worlds outside our solar system, according to one Caltech astronomer involved with NASA’s Kepler mission. According to John Johnson, an assistant professor of astronomy at the Pasadena-based university, over...

Chandra Eyes An Eclipsing Planet
2013-07-30 04:21:13

Lee Rannals for redOrbit.com - Your Universe Online Astronomers using NASA's Chandra observatory were able to witness an eclipsing planet for the first time. A team writing in The Astrophysical Journal said they used the X-ray observatory to detect the exoplanet passing in front of its parent star. "Thousands of planet candidates have been seen to transit in only optical light," said Katja Poppenhaeger of Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, Mass., who led...

Blue Exoplanet Shares Earth Color Only
2013-07-11 09:39:25

Brett Smith for redOrbit.com - Your Universe Online Using imagery from the Hubble Space Telescope, astronomers have determined that a planet orbiting a star close to our solar system has a deep azure blue color when seen from space, much like Earth. The international team that made the discovery noted similarities between these two planets likely end at their color, as the exoplanet HD 189733b is being described as a gas giant with thousand degree temperatures and violent winds in its...

Hot Jupiters More Nuanced Than Expected
2013-05-07 10:16:25

April Flowers for redOrbit.com - Your Universe Online In addition to the eight beloved planets circling our Sun, our galaxy is literally teeming with an enormous variety of planets. More than 800 of the so-called exoplanets have been identified circling stars beyond our solar system. And several different “species” of exoplanets have been discovered as well, including so-called ℠roasters´ or ℠hot Jupiters,´ which are gas giants like our own Jupiter that...

Exoplanet Candidate Smaller Than Earth Discovered
2012-07-18 14:46:30

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have detected a new exoplanet 33 light-years away that is two-thirds the size of Earth, making it the nearest known world to our solar system that is smaller than our home planet. UCF-1.01 was discovered by astronomers from the University of Central Florida using NASA's Spitzer Space Telescope. The exoplanet is the first ever identified with the telescope, pointing to a possible new role for Spitzer in helping to...

Exoplanet Gets Partially Evaporated By Host Star
2012-06-28 14:21:08

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have observed one planet in another solar system, similar to Jupiter, giving off a powerful burst of evaporation after passing by its parent star. Using the Hubble Space Telescope, astronomers saw exoplanet HD 189733b bathe in an intense X-ray radiation after its parent star gave off a violet flare. The team observed the planet with Hubble during early 2010 and late 2011, during which HD 189733b was silhouetting its...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.