Plus NOAA's GOES-19 satellite spies the lunar disk crossing the face of our parent star.

Longtime readers may remember a proposal to recreate the experience of standing on the the Moon inside a giant spherical structure here on Earth. That concept never materialized, but now, four years ...

NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.