When neutron stars collide, they create a powerful gravitational-wave signal, with the post-merger remnant ringing like a ...

Neutron stars, the collapsed remnants of massive stars, hold the densest matter in the universe. These cosmic objects are ...

The new material could be key to finally building a successful fusion reactor.

Discover the challenges and breakthroughs in nuclear fusion, the clean energy source of the future. Learn about the science ...

Fusion technology is a long way from powering a grid — if it ever will. Dozens of fusion startups have launched anyway.