Suppose we discover a "super-Earth" at a distance of 10AU from its star.Should we consider it to be potentially habitable?
A)Yes,its atmosphere may contain substantial amounts of greenhouse-type gases that can keep the planet warm beyond the usual boundaries assumed for habitable zones.
B)Yes,because its host star must be much bigger in order to have a super-Earth,so it will be much hotter there.
C)No,only planets at approximately 1AU will ever be potentially habitable.
D)No,greenhouse gases "freeze-out" at those distances.

Question

Quizplus · Accepted Answer

The presence of substantial amounts of greenhouse gases in the atmosphere of a super-Earth at a distance of 10AU from its star can keep the planet warm beyond the usual boundaries assumed for habitable zones. This means that it could potentially be habitable. Option B is incorrect as the size of the star does not determine the habitability of the planet. Option C is also incorrect as it is possible for planets beyond 1AU to be habitable. Option D is incorrect as greenhouse gases do not freeze out at that distance but may be present in significant amounts.

Suppose We Discover a "Super-Earth" at a Distance of 10AU