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Astronomers have announced the groundbreaking discovery of an Earth-sized exoplanet, called Kepler-186f, orbiting a star within its habitable zone.
Although this is an exciting finding — and a historic one at that — calling this world “Earth-like” is a little premature.
In fact, Kepler-186f could be completely alien.
GALLERY: Top 10 Places To Find Alien Life
In 2011, Discovery News ran a series of articles predicting what scientific breakthroughs were most likely to occur in 2012.
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I speculated that, some time in 2012, NASA’s Kepler space telescope would have had enough time to have detected.
Its first bona fide Earth-sized exoplanet orbiting a sun-like star within the habitable zone — the region surrounding a star.
Where water, on a rocky planetary surface, could exist in a liquid state. On Earth, where there's liquid water, there's life, so the quest to find liquid water on another world is key to our quest to find life elsewhere in the Universe.
Alas, although Kepler did indeed have enough time to gather orbital data for many small worlds with Earth-like dimensions around their host stars, that announcement didn’t come in 2012 (or in 2013) — although there were many near-misses.
People say are we going to find green aliens. Those people make aliens green because their just doing that for TV. No body knows what will other life forms would look like on other planets they could be any color they do not have to be green.
No life form on different planets will know how other life forms on other planet would really look like.
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