Conditions conducive to the development of life are thought to exist on a new world found in 2010. Gliese 581, a small red star about 20 light years away from Earth, has been a prime target for world hunters for the last 11 years. The finding of Gliese 581g was announced Wednesday. It is considered a rocky world, as opposed to a gas giant, that orbits at a distance called the “Goldilocks zone” where factors aren’t too hot or too cold to preclude the existence of life.
Make our way to discover the Goldilocks zone
Of the University of California, Santa Cruz, Steven S. Vogt took part within the announcement of Geliese 581g as the brand new world discovered in 2010. Of the Carnegie Institute of Washington, R. Paul Butler also took place in this announcement. As reported within the NY Times, Gliese (GLEE-za) 581g orbits Gliese 581, a dim red star, once each 37 days at a distance of about 14 million miles. Scientists say that is the sweet spot of the Goldilocks zone, where heat from the star is not too hot, not too cold, for water to exist in liquid form on the surface. When asked about life on Gliese 581g, Vogt said the chances “are almost 100 percent.”.
The factors why life can survive on Gliese 581g
We know that the star, Gliese 581, it only a 3rd the size of the sun but is one hundred times brighter. It has six known planets orbiting it, including Gliese 581g. A report on two of the Gliese 581 planets comes from Scientific Americans. It says that the Goldilocks zone has these two planets in it. Gliese 581g orbits between those worlds although it is three times the size of earth. This is the first exoplanet discovered within the Goldilocks zone. But it is not exactly Earthlike. The planet hunter’s suspect Gliese 581g is “tidally locked,” which means only one side faces its star, like the moon does to Earth. On the Fahrenheit system, the planet is expected to have temperatures between negative 31 and 158 on the side that faces the sun. Vogt explained that life could exist within the world. The only thing that would need to be worked with would be the “eco-longitudes” which is the permanent day and night on the planet.
The number of new 2010 planets
We found Gliese 581g by using the radial velocity technique. This is also called the “wobble,” technique sometimes. The wobble technique allows scientists to measure a gravitational pull that exoplanets give stars during orbit, reports the Los Angeles Times. The Gliese 581 wobbles were indeed created by Gliese 581g because of brightness measurements the world hunters made.
Articles cited
New York Times
nytimes.com/2010/09/30/science/space/30planet.html?_r=1 and ref=science
Scientific American
scientificamerican.com/article.cfm?id=habitable-exoplanet-gliese-581
Los Angeles times
latimes.com/news/nationworld/nation/wire/sns-earth-like-planet,,7897054.story
