Imagine you are standing on the lunar surface, for instance, near Tranquility Base where Neil Armstrong landed. You look up into the sky, and there it is…the earth…standing clear and clean in the lunar sky. It’s in the lunar sky at the exact same location it was when Neil Armstrong landed on the moon. You […]
Archives for February 2020
Stable Lunar Orbit
A satellite put into orbit around the moon will stay there, right? Nope! Most lunar orbits aren’t stable enough for a satellite to stay in orbit. Why is that? The answer is something called Lunar Mascons. Mascons are “mass concentrations”. It’s a region of the moon’s crust that contains a different concentration of mass than […]