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Astronomers have identified a newly discovered exoplanet that may orbit within the outer edge of its star's habitable zone, raising fresh questions about how common potentially life-supporting worlds might be in our galaxy.

The planet, known as HD 137010 b, was detected orbiting a sunlike star 146 light-years from Earth. Early observations suggest the planet is slightly larger than Earth and follows an orbit that places it near the cooler boundary of the so-called habitable "Goldilocks" zone — the region around a star where temperatures could allow liquid water to exist under the right conditions.

NASA has nicknamed the planet "an ice-cold Earth" due to likely frigid weather conditions. Based on observations, the surface temperature is no higher than 90 degrees below zero, making it colder than Mars.

3 Answers

Dan
The “ice-cold Earth” idea is really intriguing. Planets on the edge of the habitable zone don’t get talked about as much, but they might be just as important for understanding how life forms. It’s interesting how each discovery keeps expanding what we consider possible.
TheOtherTink
It is fascinating to speculate about where else there may be intelligent life in our galaxy. The trouble is, with only one sample —Earth —we have no idea of what the odds of such life developing might be.

Let's suppose the odds of intelligent life developing is the same as being dealt 13 spades in a fairly shuffled deck of 52 cards. The odds against that are about 6.4 x 10^11 to 1, or about 1 chance in 640 billion.

640 billion is more stars than exist in the Milky Way, so if the odds of intelligent life developing are the same as being dealt 13 spades in a bridge hand, we might very well be alone in the galaxy.
Yes…but if we are it’s one hell of a fluke.
Yes, but that's just the point.

With only one sample, we don't know how flukish intelligent life might be.
Goranko
I did not find it in media.

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