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

The sun has like 330,000 Earths worth of mass crushing its core. This pressure dramatically lowers the temperature required to achieve fusion relative to the conditions the atoms in our experiments on Earth undergo.