Why is the sun able to undergo fusion so easily, compared to us?

Question

I’ve read maybe it has something to do with gravity…? But we have gravity here on earth too.

And while the sun’s internal temperature is around 15M degrees celsius, apparently for us to replicate the fusion effect here on Earth, we need to superheat atoms to 100M degrees celsius. Why the difference?

In: 11

Answer 1

Gravity. The Earth has gravity, sure, but the sun has hundreds of thousands of times as much as Earth. That much force crushes the atoms at the core so powerfully that they occasionally fuse by force alone, causing a huge release of energy that makes fusion even more favorable, and — voila!