What Happens When the Sun Becomes a Red Giant? | Orbitkins

Earth thinks the Sun is reliable, warm and predictable. Moon has some bad news. In about five billion years, the Sun will run low on hydrogen in its core and swell into a red giant big enough to swallow Mercury and probably Venus. Will Earth escape? Will the Sun explode? And why is Jupiter so happy about all of this? Join Earth, Moon, the Sun, Mercury, Venus and Jupiter to find out what really happens when our star grows old. We cover nuclear fusion, why stars swell, mass loss, tides, the runaway greenhouse effect, planetary nebulae and white dwarfs. Orbitkins: little planets, big problems. Subscribe for more space adventures!