“We have estimated that the mean temperature of this ‘super-Earth’ lies between 0 and 40 degrees Celsius, and water would thus be liquid,” explained Stephane Udry of the Geneva Observatory, lead author of the scientific paper reporting the result.
“Moreover, its radius should be only 1.5 times the Earth’s radius, and models predict that the planet should be either rocky – like our Earth – or covered with oceans.”
I doubt we can stumble upon light-speed traveling in my lifetime, so even the optimist in me reckons that reaching this planet could only be possible during the times of my great, great, great grandchildren.
I just hope that when they finally do, it’ll be similar to what these present-day scientists have described. It’d be such a disappointment if it’s just a rock that somehow has a mirage-like effect when viewed from 20.5 light-years away 😛