Questions tagged [tides]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
14
votes
3answers
6k views

Can artificial satellite positions affect tides?

The Moon's position affects tides. So, is there any possibility for man-made satellite positions to also affect tides?
4
votes
2answers
260 views

The sorting of perturbational effects by the power

I have developed an orbital propagation tool, which considers the effects of Sun, Moon, Earth harmonics, SRP, drag, relativistic correction. First question Considering the LEO orbit, I would sort ...
5
votes
2answers
268 views

Could the Galilean moons tidally lock Jupiter?

From my understanding, given enough time, the gravity of the Moon is gradually increasing the time it takes for Earth to rotate around its axis, and that, as a result, in the distant future, Earth ...
6
votes
3answers
518 views

Could daily variations of weight on Earth really be 0.003%?

I've been reading about accelerometers. On earth, in a lecture demonstration, in a table-top experiment, they will generate a signal equal to the sum of the acceleration you'd like to measure plus the ...
2
votes
1answer
146 views

Which perturbs LEO satellites more, the Moon's gravity directly, or the changes in Earth's gravity field due to the Moon?

Reading this tutorial answer on models of Earth's gravity field I was realized that I'd never thought of it as time dependent. According to it, the biggest short term changes in the shape of Earth's ...
2
votes
1answer
90 views

Tides on other bodies

Since the tides on the moon have an antieffect on the other side of earth, (still don't quite understand how that works), shouldn't the gas giants deform when their moons move around in their orbits? ...
3
votes
2answers
958 views

Would an asteroid collision affect Moon's orbit, and what consequence would that have for Earth?

If an asteroid collided with the Moon, or an atomic bomb was blasted on it, would it affect the orbit of the Moon? The Moon's gravity plays a major role in ocean tides. If the Moon's orbit changed, ...
17
votes
2answers
2k views

How fast does Roche limit disintegration proceed?

The answers to this question about encounters with Jupiter keep mentioning the Roche limit, inside which solid objects break up due to tidal gravity gradients. Over what time scale does this effect ...
12
votes
2answers
1k views

Why does the Earth lose rotational velocity in the vacuum of space?

I think it is a well-known fact here that the Earth is slowly losing rotational velocity over time (some 1.4 milliseconds of the day are gained per hundred years). Eventually, this means that the ...
15
votes
1answer
3k views

Why is momentum transferred to the moon?

The moon whizzes around the Earth, dragging water after it and producing tides. In a comment on this question, I asserted this would sap the momentum of the moon causing it to fall to Earth. This was ...
-2
votes
1answer
615 views

What are the benefits of tides? Should we look for them on exoplanets? [closed]

If there had been no lunar tides on Earth, would life have been less likely or evolved less? If tides benefited life, how so? The anthropic principle resolves the rarity of Earth's features that are ...