A Planet Was Swallowed by a Red Giant, But it Survived
When our Sun runs out of hydrogen fuel in its core, it’ll switch to burning helium and bloat up as a red giant. This will make it 100 times larger, gobbling up the inner planets and maybe even Earth. Maybe there’s hope. Astronomers have found a planet orbiting a dying star that must have been swallowed up during that expansion phase. The star would have been 1.5 times bigger during the red giant phase than the planet’s orbit. Being inside a red giant star doesn’t lead to the inevitable death of a planet.