From Fox News, we learn,
Astronomers discovered a solar system packed with planets three of which are habitable — meaning in the zone around the star where liquid water could exist, making them possible candidates for the presence of life.
The Gliese 667C solar system is strikingly similar to ours and the three planets identified as habitable are confirmed to be super-Earths: planets that have more mass than Earth but less mass than larger planets like Uranus and Neptune
If the only requirement for “habitable” is a place where liquid water could exist, lots of icy comets would be habitable, wouldn’t they?
A good deal more than that goes into making Earth habitable.
Meanwhile, an article in New Scientist earlier this year informed us that Earth’s habitability rating had “taken a hit.” What? Earth’s habitability has a probability of 1, and it is hard for such a rating to “take a hit” unless all life is suddenly wiped out here.
It would be nice to find truly habitable planets or life on other planets, but we can’t conjure it.