Nasa Discovers Seven Earth Sized Planets 3 of them in Habitable zone

 

Recently Nasa announced  Nasa’s telescope found 7 planets rotating around a star ,three of them are  habitable  zone planets, that means it is safe for  human survival.

This is greatest discovery in the space , finding a earth sized planets and 7 of them is not a easy discovery .

On Feb 22,2017  Nasa announced  Nasa’s Spitzer Space Telescope has revealed the first system of 7 earth sized planets around  single star. Three of them are located in habitable zone.

They said “The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system.” liquid water like substance on planets.

Nasa gov

Seven  Planets around single star TRAPPIST-1

This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile.

these planets are  40 light years( 235 trillion miles) away from the earth  ,may be it takes  8,00,000 years to reach those planets.

Three planets are closest to the  star are  thought to be too hot  , while the seventh planet is  too cold . Middle 3 planets may contain alien  life in it.

 

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