What if the Sun was red?
What if the Sun was red? A star’s habitable zone, or the region around the star where temperatures are warm enough for a planet’s surface to sustain liquid water, depends on the star’s temperature and brightness. As a red giant, our Sun will expand and heat up, forcing its current habitable zone, which now encompasses Earth, outward.
A star’s habitable zone, or the region around the star where temperatures are warm enough for a planet’s surface to sustain liquid water, depends on the star’s temperature and brightness. As a red giant, our Sun will expand and heat up, forcing its current habitable zone, which now encompasses Earth, outward.
