US scientists just announced a major nuclear fusion breakthrough that could be 'one of the most impressive scientific feats of the 21st century’

(Credit: Chip Somodevilla—Getty Images)

U.S. scientists have taken a massive leap toward a long-standing goal to harness the literal power of stars.

Researchers at a federal laboratory in California have reached a historic first in the decades-old hunt to achieve a viable nuclear fusion reaction, a thermonuclear process that powers all stars including our own Sun.