First ever "Earth-like" planet discoverd: Kepler 22b!

on Wednesday, December 7, 2011

Recently NASA scientists have discovered the first ever Earth-like planet, Kepler 22b (named on the Kepler telescope). This discovery was announced on 5th December 2011. The most exciting part about this discovery is that this planet is suitably distant from it's sun-like star making the surroundings suitable for the existence of life and liquid water. It has suitable surface temperature of 22 degree Celsius and a suitable atmosphere for life. But it's still not confirmed whether any life exists there or not. This planet first came under notice when it's first star crossover was capture in 2009 by the NASA's Kepler spacecraft (launched in 2009 only). 

It is present in the Goldilocks zone- not too hot and not too cold- perfect for life. It's about 2.4 times larger than Earth and hence it is categorized under the Super-Earth catergory. 

 A comparison between our inner solar system and Kepler system

It's distance from its sun-like star is about 15% less than the distance between Earth and Sun but the luminosity of its star is 25% less than the Sun. It take about 290 days to take a complete revolution around its sun-like star.

It is reported that it's about 600 light years (3,600 trillion miles) away from the Earth and will take million of years for us to reach it!

However, scientists still don't know whether the planet is solid, liquid or gaseous as the mass of the planet is still not known. Still more research is required to reveal a lots of questions and secrets.

Wondering whether aliens exists or not!



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1 comments:

Rachna said...

pretty fascinating, isn't it?

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