Skip to main content

All Questions

Filter by
Sorted by
Tagged with
3 votes
1 answer
166 views

A planet after a moon-generating impact

Nascent terrestrial planets quickly have their surfaces cool down. Formation of crust then yields formation of a figure. What happens to the already formed crust and the figure after an energetic ...
Michael_1812's user avatar
  • 1,552
4 votes
0 answers
102 views

What are the odds of a planet with an eclipse every time the moon rotated around the planet?

If the orbital plane of a planet and its moon were sufficiently aligned, the moon could cause a solar eclipse every lunar month. What are the odds of that happening? To answer, I would guess that one ...
user121330's user avatar
2 votes
1 answer
80 views

What secondary and tertiary conclusions can be drawn from the temperature characteristics of lunar soil sent by ISRO Chandrayaan 3?

ISRO Chandrayaan 3 released the following data today about the temperature characteristics of lunar soil. What secondary and tertiary conclusions can be drawn it? More specifically, what may be the ...
Ritesh Singh's user avatar
  • 1,010
3 votes
3 answers
313 views

Will all satellites get inevitably tidally locked to their planet?

Are there cases or conditions in which an object orbiting another one (e.g. a satellite and its planet) does not get tidally locked to it? For example, in this question, it is mentioned that a large ...
vengaq's user avatar
  • 1,333
5 votes
1 answer
148 views

What are these bumps on Europa?

The surface of Europa is famous for all the criss-cross lines thought to be cracks in the ice above a water ocean that somehow re-freeze. But in the photo below I also see a lot of raised "bumps&...
uhoh's user avatar
  • 30.7k
34 votes
1 answer
6k views

Why do Jupiter’s moons have so much water?

Why do Jupiter’s moons have so much water by mass? Did all the bodies in the solar system start out with this much water and the planets closer to the Sun simply lost it to space?
Elhammo's user avatar
  • 1,107
3 votes
2 answers
239 views

How massive does a moon have to be to have a stable magnetic field?

Is there a minimum mass or other minimum properties necessary for a body to have a strong, stable dynamo to create a magnetic field conducive for life? For example, would it be possible for Titan to ...
literaldehyde's user avatar
3 votes
1 answer
82 views

How do they measure sub-centimeter wave height on a moon of Saturn?

Michael Stevens from V-Sauce has a video called The Mandelbrot Set on a different channel. At 12:56 he says: There’s a moon of Saturn that has liquid hydrocarbon ...
uhoh's user avatar
  • 30.7k
4 votes
1 answer
328 views

Wondering about a horseshoe orbit

Since I'm not a physicist, I want to know how that system works. For instance, if there was a planet, very similar to the Earth, but with two moons, and the moons where in a horseshoe orbit, how does ...
C. Marshall's user avatar