Monday, May 16, 2016

What are the odds of finding Earth 2.0? (Synopsis)

What are the odds of finding Earth 2.0? (Synopsis):

“The diversity of the phenomena of nature is so vast and the treasures hidden in the heavens so rich precisely in order that the human mind shall never be lacking in fresh nourishment.” -Johannes Kepler, and the adopted saying of the Kepler mission
The latest haul from NASA’s Kepler mission indicates that, in it sample of some 150,000 stars, there are over 2,000 confirmed exoplanets, with approximately 40% of them rocky worlds. If we extrapolate this to our entire galaxy, we have about 60 billion habitable zone planets in our galaxy alone.



The 21 Kepler planets discovered in the habitable zones of their stars, no larger than twice the Earth's diameter. Image credit: NASA Ames/N. Batalha and W. Stenzel.


The 21 Kepler planets discovered in the habitable zones of their stars, no larger than twice the Earth’s diameter. Image credit: NASA Ames/N. Batalha and W. Stenzel.
But there’s a big difference between habitable zone and capable of hosting humans as they are right now. The astronomy indicates that there are so many opportunities for life — and intelligent life — to arise, but how many of these chances are actually borne to fruition?



Artist’s depiction of the worlds found by Kepler thus far. Image credit: NASA/W. Stenzel.


Artist’s depiction of the worlds found by Kepler thus far. Image credit: NASA/W. Stenzel.
Time to take stock. Here’s how close we are to finding the first possible Earth 2.0.