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Latest Terrestrial planet Stories

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2006-06-07 18:05:00

Scientists using NASA's Far Ultraviolet Spectroscopic Explorer, or FUSE, have discovered abundant amounts of carbon gas in a dusty disk surrounding a young star named Beta Pictoris. The star and its emerging solar system are less than 20 million years old, and planets may have already formed. The abundance of carbon gas in the remaining debris disk indicates that Beta Pictoris' planets could be carbon-rich worlds of graphite and methane, or the star's environs might resemble our own solar...

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2006-06-07 07:50:00

Astronomers from McMaster University in Hamilton, Ontario find that "dead zones"- which typically extend out to 13 astronomical units from the central star of an extrasolar planetary system - can significantly slow planetary migration so that planets are not lost to the systems. This release summarizes work to be described in a press conference at the American Astronomical Society meeting in Calgary, Alberta on June 5, 2006, and in an invited talk at a scientific session during the meeting....

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2006-03-21 14:23:06

JAA -- In an article to be published in Astronomy & Astrophysics, two British astronomers present new numerical simulations of how planetary systems form. They find that, in the early stages of planetary formation, giant protoplanets migrate inward in lockstep into the central star. The current picture of how planetary systems form is as follows: i) dust grains coagulate to form planetesimals of up to 1 km in diameter; ii) the runaway growth of planetesimals leads to the formation of...

2006-02-19 00:10:00

By Maggie Fox, Health and Science Correspondent ST. LOUIS -- Astronomers looking for extraterrestrial life now have a short list of places to point their telescopes. They include nearby stars of the right size, age and composition to have Earth-like planets circling them, scientists said on Saturday. But cuts in federal funding mean that private philanthropists who pay for the bulk of their work may find out first when and if extraterrestrial life is discovered, the astronomers told a meeting...

2006-02-06 10:22:47

By Deborah Zabarenko WASHINGTON (Reuters) - What if ET isn't cute? What if extraterrestrial life doesn't even touch the surface of a faraway planet, but instead floats above its hostile surface like a hot-air balloon? Scientists say this is possible, based on data they have about the big gassy planets detected around stars other than our sun, but no one has actually seen this. To make this data come to life, astronomers turn to Lynette Cook, space artist extraordinaire. Since...

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2006-02-06 08:45:00

By Deborah Zabarenko WASHINGTON -- What if ET isn't cute? What if extraterrestrial life doesn't even touch the surface of a faraway planet, but instead floats above its hostile surface like a hot-air balloon? Scientists say this is possible, based on data they have about the big gassy planets detected around stars other than our sun, but no one has actually seen this. To make this data come to life, astronomers turn to Lynette Cook, space artist extraordinaire. Since astronomers detected the...

2006-01-25 13:15:00

By Deborah Zabarenko WASHINGTON -- A new planet-hunting technique has detected the most Earth-like planet yet around a star other than our sun, raising hopes of finding a space rock that might support life, astronomers reported on Wednesday. "This is an important breakthrough in the quest to answer the question 'Are we alone?"' said Michael Turner of the National Science Foundation. "The team has discovered the most Earth-like planet yet, and more importantly, has demonstrated the...

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2006-01-25 12:35:00

NASA -- Using an armada of telescopes, an international team of astronomers has found the smallest planet ever detected around a normal star outside our solar system. The extrasolar planet is five times as massive as Earth and orbits a red dwarf, a relatively cool star, every 10 years. The distance between the planet, designated OGLE-2005-BLG-390Lb, and its host is about three times greater than that between the Earth and the Sun. The planet's large orbit and its dim parent star make its...

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2005-12-17 18:25:00

NASA -- Astronomers have found a debris disk around a sun-like star that may be forming or has formed its terrestrial planets. The disk - a probable analog to our asteroid belt - may have begun a solar-system-scale demolition derby, where the rocky remains of failed planets collide chaotically. "This is one of a very rare class of objects that may give us a glimpse into what our solar system may have looked like during the formation of our terrestrial planets," said Dean C. Hines of the...

2005-12-15 12:52:05

PASADENA, Calif. (AP) -- Astronomers have spotted a swirling debris cloud around a sun-like star where terrestrial planets similar to Earth may be forming in a process that could shed light on the birth of the solar system. The star, located 137 light-years away, appears to possess an asteroid belt, a zone where the leftovers of failed planets collide. Terrestrial planets are those with rocky surfaces, as opposed to a gas composition. Scientists estimate the star is about 30 million years...


Latest Terrestrial planet Reference Libraries

Planetary and Space Science
2012-05-28 10:21:45

Planetary and Space Science is a peer-reviewed scientific journal established in 1959 and published by Elsevier 15 times per year. As of May 2012, the editor-in-chief is Rita Schulz (The Netherlands). The journal publishes original research articles and short communications. The main focus is on solar system processes which encompass multiple areas of the natural sciences. Research that involves planetary and space sciences involves many disciplines. Celestial mechanics is part of these...

7_a23a0395183f2368aec4b62e1b9470672
2004-10-19 04:45:43

Terrestrial Planet Finder -- The Terrestrial Planet Finder is a proposed NASA telescope system capable of detecting extrasolar terrestrial planets. In May 2002, NASA chose two TPF mission architecture concepts for further study and technology development. Each would use a different means to achieve the same goal - to block the light from a parent star in order to see its much smaller, dimmer planets. That technology challenge has been likened to finding a firefly near the beam of...

6_07e7808819d3a0e0b1e9459490122f2b2
2004-10-19 04:45:42

Planet -- A planet is a body of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion. Until recently, only nine were known (all of them in our own Solar system). As of the end of 2002 over 100 are known, with all of the new discoveries being extrasolar planets. Astronomers often call asteroids minor planets, and call the larger planetary bodies (those which are commonly called planets) major planets. Planets within the solar system can be...

Gas Giant
2004-10-19 04:45:41

Gas Giant -- A gas giant is a generic astronomical term invented by the science fiction writer James Blish to describe any large planet that is not composed mostly of rock or other solid matter. Gas giants may still have a solid core - in fact, it is expected that such a core is probably required for a gas giant to form - but the majority of its mass is in the form of gas (or gas compressed into a liquid state). Unlike rocky planets, gas giants do not have a well-defined surface. There...

6_f3ae28666ea2fe9e06e16221eea19d522
2004-10-19 04:45:41

Extrasolar Planet -- An extrasolar planet is a planet orbiting around a star other than the Sun. Extrasolar planets were first discovered in the 1990s as a result of improved telescope technology, CCD and computer-based image processing which allowed far more accurate measurements of stellar motions. The first extrasolar planets were reported by the astronomer Aleksander Wolszczan in 1993, orbiting the pulsar PSR 1257+12. Subsequent investigation has determined that they are only planets...

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Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'