Let’s take a look at this model. The Sun is a star ... bright because it reflects light from the Sun. Like the Earth, half of the Moon faces towards the Sun, and half faces away from it.

To land Blue Ghost on the moon, Firefly Aerospace laid out 14 major mission milestones from Earth to the lunar surface. To land your own Blue Ghost, you will need to follow 42 steps.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. It takes just about 27 days for the Moon we all know and love to make its way around ...

Earth is the only rocky planet in the solar system with a significant moon. And the moon really is significant: It's roughly 1.2% the mass of Earth. That may not be big in an absolute sense ...