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Latest Terrestrial planet Stories

Getting to Know the Goldilocks Planet
2012-04-02 06:11:33

[ Watch the Video ] NASA's Kepler spacecraft is discovering a veritable avalanche of alien worlds.  Recent finds include planets with double suns, massive "super-Earths" and "hot Jupiters," and a miniature solar system.  The variety of planets circling distant suns is as wonderful as it is surprising. As the numbers mount, it seems to be just a matter of time before Kepler finds what astronomers are really looking for:  an Earth-like planet orbiting its star in the...

A New Take On Planetary Accretion
2012-02-29 09:39:21

The prevailing model for planetary accretion, also called fractal assembly, and dating back as far as the 18th century, assumes that the Solar System´s planets grew as small grains colliding chaotically, coalescing into bigger ones, colliding yet more until they formed planetesimals. The planetesimals then collided until they formed planets as varied as the Earth and Jupiter. The model assumes that this occurred in an extremely hot (as high as 1,600 degrees Celsius) environment for...

Earth Siblings Can Be Different
2012-02-24 04:34:11

Chemical clues on the formation of planetary systems The study of the photospheric stellar abundances of the planet-host stars is the key to understanding how protoplanets form, as well as which protoplanetary clouds evolve planets and which do not. These studies, which have important implications for models of giant planet formation and evolution, also help us to investigate the internal and atmospheric structure and composition of extrasolar planets.. Theoretical studies suggest that...

pia15264-full
2012-01-27 10:05:48

The Kepler Space Telescope (KST), NASA´s planet-hunting observatory, has discovered 26 confirmed planets within 11 new solar systems, including one with five planets all orbiting closer to their sun than Mercury circles ours, scientists told Reuters on Thursday. The confirmed planets range in size from 1.5 times the radius of Earth to larger than Jupiter. Fifteen of the planets are between Earth and Neptune size. However, it is not yet known which, if any, of these distant worlds are...

Volunteers Asked To Help Look For Earth-Like Planets
2012-01-16 14:11:33

Volunteers are being asked to join in the hunt in looking for nearby planets that could support life. Volunteers can visit the Planet Hunters website to see time-lapsed images of 150,000 stars that were taken by the Kepler space telescope. The members of the public will be taught signs that indicate the presence of a planet and how to alert experts if they spot them. "We know that people will find planets that are missed by the computer," Chris Lintott from Oxford University told...

Image 1 - Kepler Finds Three Smallest Exoplanets
2012-01-12 04:24:07

Discovery may boost likelihood of existence of habitable planets A team of astronomers led by scientists at the California Institute of Technology (Caltech) has discovered the three smallest confirmed planets ever detected outside our solar system. The three planets, which all orbit a single star, are smaller than Earth and appear to be rocky with a solid surface. Until now, astronomers have found at most only four other rocky planets, also called terrestrial planets, around other stars....

Could A Two Sun System Support A Habitable Planet Or Moon?
2012-01-11 09:44:13

A team of University of Texas at Arlington (UTA) astrophysicists are suggesting that a habitable Earth-like planet could exist in a distant solar system recently discovered by NASA´s Kepler Space Telescope. Kepler-16b, a cold, gaseous planet orbiting two stars -- similar to the fictional Tatooine of Star Wars -- in the Kepler-16 system, was discovered by Kepler back in September. Based on the discovery, the UTA team conclude that an Earth-like planet could exist in the system´s...

Image 1 - NASA Announces Kepler Discovery Of Earth-Size Planets
2011-12-20 13:38:58

[ Watch the Video ] NASA announced on Tuesday that its Kepler mission has discovered the first Earth-size planets orbiting a star like our sun outside our solar system. Planets Kepler-20e and Kepler-20f are too close to their star to be in the habitable zone where liquid water could exist, but NASA said they are the smallest exoplanets ever confirmed around a star like our sun. The space agency said that the discovery marks the next important milestone in the search for Earth-like...

38494_web
2011-12-05 21:30:56

The database suggests over 15 exoplanets and 30 exomoons as potential habitable candidates Scientists are now starting to identify potential habitable exoplanets after nearly twenty years of the detection of the first planets around other stars. Over 700 exoplanets have been detected and confirmed with thousands more still waiting further confirmation by missions such as NASA Kepler. Most of these are gas giants, similar to Jupiter and Neptune, but orbiting very dangerously close to their...


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...

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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
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.