Green comet C/2022 E3 (ZTF) will be closest to Earth on Feb. 1. Here's how to see it.

NASA has Simulated a Tiny Part of the Moon Here on Earth

Surprising Discovery: Graphene on Platinum Surfaces Seemingly Defies Coulomb’s Law

Mars passes behind the Moon tonight for U.S. and Central American observers located south of about 37° north latitude. For those farther north, the Moon passes about 0.1° below the Red Planet.