Building Nuclear Power in the U.S. Is Tough. NASA Wants to Do It on the Moon.

So do China and Russia. Here’s what you need to know about America’s new lunar-energy race ...

In a race back to the moon, U.S. and China see a fast-approaching finish line

The U.S. and China are in a sprint toward manned missions to the lunar surface by the end of this decade, with sights on 2029 ...

U.S. Is Losing Race to Return to Moon, Critics Say, Pointing at SpaceX

The company’s Starship rocket, which has suffered a series of recent test explosions, is still years away from being ready ...

From falling apples to black holes: Why gravity still mystifies us

From Newton’s falling apple to Einstein’s curved spacetime, our understanding of gravity has come a long way, yet this ...