Neutrino lasers: It’s an idea that many physicists didn’t see coming. At first glance, physics suggests that it would be impossible to make a laser of neutrinos, famously elusive subatomic particles.

When the green laser encounters atoms along its path through the crystal, it gives the electrons in those atoms a bit of extra energy. In their high-energy state, those electrons can absorb blue light ...

Researchers have explored the development and testing of optical mining techniques for extracting water and volatiles from carbonaceous asteroids, particularly focusing on simulants called Nectar A ...