All Questions
10
questions
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What happened to Newton 3rd law if our Moon is moving away at 1.5" yearly? [closed]
Our Moon is going away and I read that it is the culprit is our ocean, but then what happens to Newton 3rd law there should be an equal and opposite forces too so where's that? Is it absorbed by the ...
- 13k
1
vote
1
answer
134
views
Why does not the Moon escape from the Earth? [duplicate]
We know that Gravitational Force that is applied by the sun on the moon is greater than that by the earth on the moon.
My Question is then why does not the moon escape from the earth and go towards ...
- 159
2
votes
2
answers
473
views
If gravity can be disrupted by larger forces, why does the moon orbit the Earth instead of the Sun? [duplicate]
I read an thread on this site about how a larger gravitational pull can overpower a smaller gravitational pull. I took this to mind, and I started wondering why the moon orbits the Earth instead of ...
- 285
0
votes
1
answer
578
views
Gravity Sun Earth Moon [duplicate]
The gravitational pull the Sun has on the Moon is roughly two times greater than the pull the Earth has on the Moon. If this is the case, why does the Sun's gravity not pull the Moon away from the ...
- 9
3
votes
3
answers
6k
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How can we see the moon while it's between the Earth and the Sun? [duplicate]
I know this sounds like (and probably is) a stupid question, but I can't figure it out.
As far as I know, the crescent shape of the moon is when the moon is on the sunny side of the Earth, but that ...
- 141
3
votes
1
answer
490
views
Is it possible that Mercury collided with Earth, thus creating the Moon?
I recently heard a theory that Mercury might have been bigger before a massive collision that shrunk it and sent it on its current orbit. I also heard that a possible explanation for the formation of ...
- 31
3
votes
2
answers
1k
views
Which will collide first, the moon and Earth, or Sun and Earth?
As time progresses, which scenario will happen first? The moon colliding with Earth, or the Earth colliding with the Sun? I figure the Moon and Earth will happen first, based on proximity, but the sun ...
- 31
8
votes
2
answers
6k
views
How many hours will there be in a day 5,000,000,000 years from now?
It is known that the moon is moving away from Earth 2cm a year, and in doing so makes the days longer.
I want to know how many hours will have one day, when our planet is near its end.
- 1,108
9
votes
2
answers
4k
views
Why is the Earth's moon so big?
It could just be me, but it seems like our Moon is WAY bigger than it should be for a planet of our size. If you look at satellite-to-planet mass ratios for the largest moons of Jupiter, Saturn, ...
- 3,936
2
votes
3
answers
8k
views
True or false: the Moon was touching the Earth 1.2 billion years ago
A creationist website makes this argument for the 6,000 year old earth. I'm embarrassed to say I don't know how to do the math to evaluate the claim myself. However, the time scales involved seems ...
- 21