A Second Earth in Our Solar System

travel to another Earth - comparable earthly concern just got a stack easier . It turns out that there may be many other soil - and - water planets lurking at the bound of our solar arrangement in spot like the Oort Cloud . These planets , which could be roughly the sizing of our own , would hold all the element we need for life . They ’re just sitting in a cold , dimly - illumine part of the solar system , waiting to be defrost and colonized . Yesterday , NASA scientist denote that this changes the forecast for nearby livable planet .

NASA ’s Alan Stern said these planets are so far off from the sun that we have n’t visit them yet :

Our old view , that the Solar System had nine planet will be supplanted by a eyeshot that there are one C if not thousands of planets in our Solar System . It could be that there are objects of ground - mass in the Oort swarm ( a band of junk ring our planetal system ) but they would be frozen at these distances . They would look like a frozen Earth .

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So all we need to do is haul one of those baby into our orbit , defrost it , and start live . Earth 2 , here I come !

Beyond our solar system , zillion more Earth 2s look . University of Arizona astronomer Michael Meyer , co - writer of a study about extrasolar dirt - and - water world , tell apart reporters :

Our reflexion suggest that between 20 % and 60 % of Sun - comparable stars have evidence for the formation of jolty planets not unlike the processes we think led to planet Earth . That is very exciting .

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