August 22, 2016
The search for habitable, alien worlds needs to make room for a second “Goldilocks,” according to a Yale University researcher.
For decades, it has been thought that the key factor in determining whether a planet can support life was its distance from its sun. In our solar system, for instance, Venus is too close to the sun and Mars is too far, but Earth is just right. That distance is what scientists refer to as the “habitable zone,” or the “Goldilocks zone.”