Earth twin

A planet outside our solar system that is approximately the same size as the Earth and roughly the same distance from its star.
Example Citations:
Slightly smaller than Earth, KOI 326.01 lies in the habitable zone of its star, a red dwarf star dimmer than our sun. At around 100 light years away, it's "fairly close" to us, said William Borucki, of NASA's Ames Research Center, "but they're not places you can walk to on a Sunday".
Currently just a promising data point, KOI 326.01 (which stands for Kepler Object of Interest) might end up getting a better name if it does turn out to be a real Earth twin.
—Rowan Hooper, " Exoplanet findings spark philosophical debate:," New Scientist, February 21, 2011
Astronomers are probably just a few years from the first-ever finding of an Earth twin outside our solar system, that is, a planet roughly the size of Earth orbiting at a similarly temperate distance from a sunlike star.
—John Matson, " Habitable exoplanets could exist at white dwarfs, or near dark matter:," Scientific American, April 1, 2011
Earliest Citation:
The "Earth twin distance" is how far a planet would have to be from the star to receive the same insolation that Earth receives from the Sun.
—George Ochoa and Jeffrey Osier, "The Writer's Guide to Creating a Science Fiction Universe," Writer's Digest Books, March 1,1993
Notes: Related Words: Category:

New words. 2013.

Look at other dictionaries:

  • Twin paradox — In physics, the twin paradox is a thought experiment in special relativity, in which a twin makes a journey into space in a high speed rocket and returns home to find he has aged less than his identical twin who stayed on Earth. This result… …   Wikipedia

  • Twin Lakes Brewing Company — is an American brewing company. Its brewery and taproom are located on Twin Lakes Farm in Greenville, Delaware. History The Twin Lakes Brewing Company was founded in Greenville, Delaware in April, 2006. [cite web title =Twin Lakes Web Site… …   Wikipedia

  • twin-earth — thought experiments are conducted by imagining a possible world like this in many or all phenomenal respects, but unlike it in some other way. One then compares one s own situation with that of the twin or Doppelgänger . The point of the story is …   Philosophy dictionary

  • Twin Galaxies — is an American organization that tracks video game world records and conducts a program of electronic gaming promotions. It operates the Twin Galaxies website and publishes the Twin Galaxies Official Video Game Pinball Book of World Records ,… …   Wikipedia

  • Twin and earth — is a name for a type of mains electricity cable. It comprises two sheathed current carrying conductors and an unsheathed protective conductor. Line and neutral are individually insulated, the earth conductor is bare. There is an overall sheath of …   Wikipedia

  • Twin Twist — is the name of a fictional character from the various Transformers universes.Transformers: Generation 1Transformers character name =Twin Twist japanname = caption = affiliation =Autobot subgroup =Jumpstarters Wreckers rank =Unknown, but it is… …   Wikipedia

  • Twin Shadow — на выступлении в 2011 году Основная информация Имя при рождении Джордж Льюис мл …   Википедия

  • Earth in science fiction — Earth An overwhelming majority of fiction is set on or features the Earth. However, authors of speculative fiction novels and writers and directors of science fiction film deal with Earth quite differently from authors of conventional fiction.… …   Wikipedia

  • Twin Earth thought experiment — The Twin Earth thought experiment was presented by philosopher Hilary Putnam in his 1973 paper Meaning and Reference and subsequent 1975 paper The Meaning of Meaning , as an early argument for what has subsequently come to be known as semantic… …   Wikipedia

  • Twin Quasar — The Twin Quasar Q0957+561 Twin Quasar Observation data (Epoch J2000) Constellation Ursa Major …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.