Earth 2.0 ... Life Possible On Gliese 581g, 20.5 Light-Years Away

A planet, as depicted in this rendering, orbits the habitable zone of a star 20 light years from Earth, meaning it could have water on its surface. Image Credit: National Science Foundation and NASA

Earth 2.0 ... Life Possible On Gliese 581g, 20.5 Light-Years Away

Astronomers at the Keck telescope in Hawaii, during a study that has been underway for more than a decade, have identified a solar system that has a planet they suspect could support life as we know or understand it here on our Oblate Spheroid.

Let's call it Earth 2.0. It is a planet that is circling a Sun named Gliese, that is located a little over twenty light years away (the time it would take to get there if one could travel in a craft at the speed of light and carry enough food and etc. to sustains one's life to arrive and observe this suspect orb on site).

Carbon copy? The Gliese 581 solar system resembles our own but on a much smaller scale. Planet "G" is located in the "Goldilocks" zone of this sun's solar system [CTRL-CLICK photo to launch YouTube video]. Image Credit: Zina Deretsky/National Science Foundation

This excerpted and edited from All Voices news webportal -

Discovered Planet Zarmina (Gliese 581g) Is 'Habitable' For Human Life
By ryangeneral - Honolulu : HI : USA | Sep 30, 2010

The planet lies near the middle of the Goldilocks zone, or habitable zone of its parent star, and the presence of liquid water is considered a strong possibility. The discovery of Gliese 581 g was announced in September 2010, and is believed to be the first Goldilocks planet ever found, the most Earth-like planet, and the best exoplanet candidate with the potential for harboring life found to date.

The planet was detected using radial velocity measurements combining the data from the HIRES instrument of the Keck 1 telescope and the HARPS instrument of ESO's 3.6m telescope at La Silla Observatory. The planet is believed to have a mass of three to four times that of the Earth and an orbital period of just under 37 days.

Steven Vogt, the co-discoverer, unofficially named the planet "Zarmina", after his wife.
Reference Here>>

The Goldilocks zone refers to a story that parents read to their children that goes by the formal title "The Story Of The Three Bears". This fable, often referred to as "Goldilocks and the Three Bears" is a children's story first recorded in narrative form by English author and poet Robert Southey and first published in a volume of his writings in 1837. The same year, writer George Nicol published a version in rhyme based upon Southey's prose tale, with Southey approving the attempt to bring the story more exposure. Both versions tell of three bears and an old woman who trespasses upon their property.
(ht: wikipedia)

In the fable, Goldilocks is hungry and stumbles upon a home of Bears where three bowls of soup or porridge are on the table. Goldilocks helps herself to eating some of the porridge and discovers that one bowl of the food mixture is too hot, one is too cold, and one ... the one she presumably eats all up is ... Just Right!

This planet discovery is in a solar system zone that is just right given our knowledge of the origins of life as we know it here on Earth.

We wonder if the shape of this Gliese 581g orb is the same Oblate Spheroid shape of our own Earth. Welcome Zarmina ... welcome Earth 2.0.

Oblate Spheroid's Solar System Expands to 32 Exoplanets

Artist’s impression of Gliese 667C, a six Earth-mass exoplanet that circulates around its low-mass host star at a distance only 1/20th of the Earth-Sun distance. The host star is a companion to two other low-mass stars, which are seen here in the distance. Image Credit: ESO/L. Calçada

Oblate Spheroid's Solar System Expands to 32 Exoplanets

Astronomers have expanded the list of planets outside the solar system with their discovery of 32 new exoplanets using the European Southern Observatory's telescope in La Silla, Chile.

The expansion of The Earth's family was found through technology known as the High Accuracy Radial Velocity Planet Searcher (HARPS). HARPS is a spectrometer that can find planets by detecting a twitch in a star caused by the gravity of an orbiting planet.

This finding revealed Monday by the scientists who operate HARPS adds to the more than 400 as the number of planets seen outside of our previously defined Solar System.

This excerpted and edited from Wired Science -

Exoplanets Galore! 32 Alien Planets Discovered, Including Super-Earths
By Hadley Leggett, Wired Science - October 19, 2009, 2:12 pm

Thirty-two new alien orbs have just been added to the growing list of exoplanets, including several that qualify as “super-Earths,” meaning they have a mass only a few times that of our planet and could potentially harbor Earth-like environments.

In the past five years, a special exoplanet-hunting device attached to a 3.6-meter telescope in La Silla, Chile, has spotted more than 75 alien planets, including 24 of the 28 known exoplanets with a mass less than 20 times that of Earth.
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“These findings consolidate the results of simulations of planet formation predicting a large population of super-Earths,” astrophysicist Stephane Udry of Geneva University wrote in an email to Wired.com. “The formation models furthermore predict an even larger population of Earth-mass planets, providing solid scientific justifications for the development of ambitious programs (in space and on the ground) to look for those Earth-type planets.”

Udry’s announcement of the HARPS team’s findings Monday at an exoplanet conference in Portugal marks the end of the first phase of HARPS research, and scientists say the project has been even more successful than they originally expected.
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The HARPS scientists focused their exoplanet-hunting efforts on certain kinds of stars, including stars similar to our sun and those with low mass (called Mdwarfs) or low metal content.

“By targeting M dwarfs and harnessing the precision of HARPS, we have been able to search for exoplanets in the mass and temperature regime of super-Earths,” co-author Xavier Bonfils of the Joseph Fourier University in France said in a press release, “some even close to or inside the habitable zone around the star.”
Reference Here>>

The HARPS scientists aim to find an Earth-like planet capable of supporting life outside of our Oblate Spheroid.

So, in signing off - it's "Exo, Exo" ... not "XO, XO"!