Questions tagged [earth-moon]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
3 votes
1 answer

What would be the effect of a geostationary moon?

What kinds of differences from our Earth would we see with a moon in a geostationary orbit over the equator? Assuming the gravitational pull is roughly the same as it is with ours (my back of the ...
  • 133
1 vote
1 answer

Does the Sun and Moon basically appear to "move on the sky" identically regardless of location and date? [closed]

For a long time, I've been trying to use Stellarium (simulation) and many visualizations and animations in order to get a good idea of how the Sun and Moon move across the sky, as seen by a human from ...
  • 11
5 votes
7 answers

What is this Sun and moon photographic anomaly?

Below is a photo that my son took in Scotland showing the sun and moon at the same time. I immediately noticed this anomaly that the light illuminating the moon could not possibly come from the sun. I ...
6 votes
5 answers

Which Earth minerals would Moon colonists miss the most?

In my science-based novel, Moon colonists need to return to Earth to collect some rare or absent mineral(s) Ideally, something they could derive from seawater. Which minerals might they be...?
3 votes
3 answers

Why are there craters on the moon?

The Earth's moon is in synchronous rotation around Earth. The question: Why are there craters on the lit side of the moon and the dark and of which are not parallel with crater schemes on Earth?
user avatar
0 votes
1 answer

Musing on Earth's gravity

(a) What, if anything, is the difference between Earths geographic center, i.e. mid-point of the spin axis, and the gravitational center? (b) What is the average distance between the Earth's center ...