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Benchmark survey shows that giant outer extrasolar planets are rare
07-11-2007 · EurekAlert!Astronomers who used powerful telescopes in Arizona and Chile in a survey for planets around nearby stars have discovered that extrasolar planets more massive than Jupiter are extremely rare in other outer solar systems.
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Keywords: benchmark, survey, shows, giant, outer, extrasolar, planets, rare, show, planet
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- Stellar tiramisu
07-07-2007 · EurekAlert!
Looking at the chemical composition of stars that host planets, astronomers have found that while dwarf stars often show iron enrichment on their surface, giant stars do not. The astronomers think that the planetary debris falling onto the outer layer of the star produces a detectable effect in a dwarf star, but this pollution is diluted by the giant star and mixed into its interior.
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- NASA scientists detect spectrum of planets orbiting other stars
02-22-2007 · EurekAlert!
For the first time, scientists at Goddard have obtained a spectrum, or molecular fingerprint, of a planet orbiting another star. Using spectroscopy, scientists were able to identify silicon dust in clouds on a gas-giant planet called HD 209458b. That planet is located 150 light years from Earth.
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- XO-3b: Supersized planet or oasis in the 'brown dwarf desert'?
05-30-2007 · EurekAlert!
One of the oddest extrasolar planets ever cataloged -- a mammoth orb more than 13 times the mass of Jupiter that orbits its star in less than four days -- will be unveiled at the American Astronomical Society meeting in Honolulu.
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- Computer models suggest planetary and extrasolar planet atmospheres
06-19-2007 · EurekAlert!
The world is abuzz with the discovery of an extrasolar, Earthlike planet around the star Gliese 581 that is relatively close to our Earth at 20 light years away in the constellation Libra.Bruce Fegley, Jr., Ph.D., professor of earth and planetary sciences at Washington University in St. Louis, has worked on computer models that can provide hints to what comprises the atmosphere of such planets and better-known celestial bodies in our own solar system.
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- Astronomers First To Measure Night And Day On Extrasolar Planet
10-12-2006 · ScienceDaily
University of Central Florida Astronomy professor Joseph Harrington and University of California at Los Angeles professor Brad M. Hansen and their team have made the first direct observation of distinct day and night temperatures on a planet orbiting another star. UCF Professor Joseph Harrington says that studying planetary atmospheres under such exotic conditions puts terrestrial and solar-system meteorology into a universal context, which aids in our understanding of weather on all planets.
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- Yellowstone's quiet power
02-28-2007 · EurekAlert!
A 17-year University of Utah study of ground movements shows that the power of the huge volcanic hotspot beneath Yellowstone National Park is much greater than previously thought when the giant volcano is slumbering. Findings show gradual ground movements overpower quake movements at Yellowstone, and the hotspot makes the Teton fault behave unexpectedly.
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- UCF, UCLA astronomers first to measure night and day on extrasolar planet
10-12-2006 · EurekAlert!
UCF Professor Joseph Harrington says that studying planetary atmospheres under such exotic conditions puts terrestrial and solar-system meteorology into a universal context, which aids in our understanding of weather on all planets.
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- Gas giants jump into planet formation early
01-08-2007 · EurekAlert!
Gas-giant planets like Jupiter and Saturn form soon after their stars do, according to new research.
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- Day and night temps measured on an extrasolar planet
10-12-2006 · EurekAlert!
For the first time, astronomers have measured the day and night temperatures of a planet outside our solar system. The team found that a giant Jupiter-like gas planet orbiting very close to its star is blisteringly hot on one side, and frigid on the other.
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- Rare soft-shell turtle, nesting ground found in Cambodia
05-16-2007 · EurekAlert!
One of the world's largest and least studied freshwater turtles has been found in Cambodia's Mekong River, raising hopes that the threatened species can be saved from extinction. Scientists from Conservation International, World Wildlife Fund, the Cambodian Fisheries Administration and the Cambodian Turtle Conservation Team captured and released an 11-kilogram (24.2-pound) female Cantor's giant softshell turtle (Pelochelys cantorii) during a survey in March.
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