What defines the habitable zone around a star?
A) the region around a star where rocky planets can form
B) the region around a star where humans can survive
C) the region around a star where liquid water can exist on planetary surfaces
D) the region around a star where its ultraviolet radiation is too weak to destroy biological organisms on a planetary surface
E) the region around a star outside of its hot, tenuous corona

Question

Quizplus · Accepted Answer

The habitable zone around a star is defined as the region where temperatures are just right for liquid water to exist on the surface of a planet. This is important for the potential for life to arise and survive on a planet, as water is a necessary ingredient for life as we know it. The habitable zone is determined by a combination of factors, including the amount of energy a star emits and the distance between the star and any planets orbiting it.

What Defines the Habitable Zone Around a Star