Stellar activity in late-type main sequence stars induces photometric modulations and apparent radial velocity variations that may hamper the detection of Earth-like planets and the measurement of their size, mass and atmospheric propert... E Herrero,I Ribas,C Jordi,... - 《Highlights of Spanish...
Some planet hunters don't consider these three to be as important as planets around normal stars. At 14 times the mass of Earth, the newfound planet -- circling a star similar in size and brightness to our Sun -- is about as heavy as Uranus, a world of gas and ice and the smallest...
The atmospheres of orbiting Earth-sized planets are observationally accessible via transmission spectroscopy when the planets pass in front of these stars. Statistical results suggest that the nearest transiting Earth-sized planet in the liquid-water, habitable zone of an M dwarf star is probably ...
"We have identified stars where the habitable zone’s X-ray radiation environment is similar to or even milder than the one in whichEarthevolved," team member Sarah Peacock, from the University of Maryland, explained. "Such conditions may play a key role in sustaining arich atmosphere like th...
Direct observation of Earth-like planets is extremely challenging, because their parent stars are about 10(10) times brighter but lie just a fraction of an arcsecond away. In space, the twinkle of the atmosphere that would smear out the light is gone, but the problems of light scatter and...
The angle(角度) to see Earth pass in front of the sun is so small that only 1,715 of those stars could see our planet at some point in the last 5,000 years, including 313 that can no longer see us because we’ve moved out of view. Another 319 stars will be able to see Earth...
Flanked by Korakuen and Suidobashi stations, Tokyo Dome and its surrounding attractions draw thrill-seekers, sports stars, students and music fans. In addition to being the downtown area's largest entertainment venue, the Dome is the home of Tokyo's most beloved baseball team, the Yomiuri Giant...
When such an occulter is flown in formation with a telescope of at least one metre aperture, terrestrial planets could be seen and studied around stars to a distance of ten parsecs.doi:10.1038/nature04930Cash, WUniv ColoradoNatureCash, W. (2006) Detection of Earth-like planets around nearby...
Earth-like exoplanets orbiting dwarf stars are easier to observe than real Earth twins around solar-type stars, according to the new study.
The public identified 95 brown dwarfs within our cosmic neighborhood. Brown dwarfs are objects between stars and planets in size, being heavier than planets but lighter than stars. Some are even cool enough that they are comparable to Earth temperatures and could host water clouds. ...