Smartest Aliens May Live Around Red Dwarf Stars
A planetâ€™s lease on life runs out when the evolving star grows too hot for the world hold onto water for sustaining life as we know it. With increasing stellar luminosity, the habitable zone sweeps outward beyond the planetâ€™s orbital radius, leaving paradise worlds to bake to death as surviving extremophliles burrow underground.
Whatâ€™s sobering is that Earth has already spent 70 percent of its habitable years inside the sunâ€™s golden zone. Â And it took that long for intelligent life to appear on the surface.
Weâ€™ve got about 1.7 billion years left, according to a paper published by Andrew Rushby and co-authors in Astrobiology Magazine. When the sun reaches 118 percent the brightness of what it is today our oceans will evaporate away and Earth will be desiccated, resembling the terrain on Saturnâ€™s moon Titan.
The scientists say the best place buy real estate for long-term habitability is around a red dwarf star. A planet can remain cozy for advanced life for a stretch of time that is five times greater than for Earth. All other thing being equal, this suggests that SETI searches should target red dwarfs to see if they are home to advanced civilizations that do not have to worry about the clock running out.
There have been numerous news announcements, mostly from NASAâ€™s Kepler planet hunting observatory, about the discovery of so-called â€śEarth-likeâ€ť worlds nestled inside a starâ€™s habitable zone.
Sources and more information:
NASA has decided to stop trying to fix the Kepler space telescope, now located 82 million kilmoetres from Earth as it orbits the sun. Take a look at some of the things we learned from Kepler since since it first rocketed into space in 2009. August 15, 2013 3:03 PM This artist's conception shows a hypothetical planet with two moons orbiting in the...
"We thought we would have to search vast distances to find an Earth-like planet. Now we realize another Earth is probably in our own backyard, waiting to be spotted," said Courtney Dressing of the Harvard-Smithsonian Center for Astrophysics (CfA). Six percent of red-dwarf stars have habitable, Earth-sized planets, astronomers at the...
( via news.discovery.com )
properREDeye wrote October 3, 2013 2:10:33 PM CEST
One thing is for sure the smartest life definitely doesnt come from this planet
godnodog wrote October 3, 2013 12:07:36 PM CEST
I wouldnÂ´t worry about the planet, if anyone is alive by that time, and if technology keeps developing, most likely they will be able to move Earth to what is by then the habitable zone.
Elnorel wrote October 3, 2013 11:51:52 AM CEST
Why scientists believe that aliens use radio waves for communication is beyond me.
Light speed communication? Seriously?
SaniaMirza wrote October 2, 2013 11:42:36 PM CEST
my classmate's step-sister makes $82/h hourly on the internet. She has been out of a job for 6 months but last month her pay was $20983 just working on the internet for a few hours. Read more on this site..