Life elsewhere: The Hindu editorial


http://www.thehindu.com/opinion/editorial/life-elsewhere/article17355686.ece

Excerpts:
"The closest planet in the TRAPPIST-1 system takes just 1.5 days to complete an orbit and the farthest one takes 20 days; the orbital period of the planets is also similar to the Galilean moons.
With a fair possibility of liquid water being present on at least three planets, the focus is now on deciphering the climate and chemical composition of their atmosphere. As a first measure, scientists are keen to know if the planets are Earth-like, by ruling out the presence of hydrogen gas enveloping them. Mass estimates already suggest that the inner six planets might have a rocky composition, while the one with a low density may have a volatile composition due to the presence of an ice layer or atmosphere. The composition of the atmosphere can be identified by measuring the wavelength characteristics of light. Since the TRAPPIST-1 system is close by and the star is cool enough, it would be easier to decipher the various critical features of the planets. If there is life on these planets, we would know this in about 10 years. The search for extraterrestrial life has just become more focussed."
My VIEW:
Just wait for ten years, NASA scientists will tell you whether there's life elsewhere in this universe 😊
Hope their friends will allow planet Earth to remain in one piece, till then!
M G Warrier

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