So I just have some of these questions. Please don t give really complicated answers.
These questions are based on the second moon being the same size as our moon right now, in a close orbit.
If the Earth got a second moon, could it change the earth s orbit, and therefore change the seasons?
If the earth got a second moon, could it knock the earth out of orbit, and with the sun s pull, could it start in a path to the Sun? So eventually we would burn up?
If the Earth got a second moon, will it affect the time a lot? Or just a little?
If the Earth got a second moon, is it possible that the two moons will collide, debris falling into Earth and cause a mass extinction, then create new life? Also, after the collision, there is a bigger Earth, and a single moon that is much bigger than ours right now.
If the Earth got a second moon, will it affect the gravity much? Will we feel lighter or heavier, due to the gravitational pull?
If the earth got a second moon, will it be similar to the moon moving out of its orbit and much, much closer to the Earth?
Sorry for all these questions; you might not get them. I m just curious. Also if you haven t, read what the second moon is like (above).
Some questions about moons and the Earth?
2015-11-16 1:43 am
回答 (6)
2015-11-17 3:48 am
a second moon wouldn't change earth's orbit.
depending on where the other moon would be, the sun's gravity might be stronger than earth's and the moon would switch to an elliptical orbit around the sun
if we got close enough to the sun, sure, we could burn up.
a second moon wouldn't affect time (since time depends on where we are facing relative to the sun), but we might see changes in the tides and two moons at night.
depending on where the other moon would be, the sun's gravity might be stronger than earth's and the moon would switch to an elliptical orbit around the sun
if we got close enough to the sun, sure, we could burn up.
a second moon wouldn't affect time (since time depends on where we are facing relative to the sun), but we might see changes in the tides and two moons at night.
2015-11-16 6:02 pm
to answer you have to know how big and how close the second moom is.
2015-11-16 5:07 am
Suggested reading:
http://www.amazon.com/What-Earth-Had-Moons-Thought-Provoking/dp/0312598920
http://www.amazon.com/What-Earth-Had-Moons-Thought-Provoking/dp/0312598920
2015-11-16 3:36 am
The simple answer to all of those is no.
2015-11-16 2:08 am
By close orbit i assume it's going to orbit at Geosynchronous orbit (23 hour 56 minutes) and have the mass of the Moon.
1: Yes it does change orbit and season, but not radically.
2: Depends on HOW it gets the 2nd moon, if it magically appeared and instantly orbits Earth then no.
3: Not much, except both Moon will perturb each other's orbit and probably affect Earth's rotation in the next millennium.
4: Yes it's possible, but not probable if the 2nd Moon is in Geosynchronous orbit.
5: Not significantly.
6: Well it depends on distance, our Moon is moving away from us because Earth rotates faster than it's orbit, but if the Moon orbits faster than Earth's rotation than Earth will bring it closer (like Phobos moon of Mars)
1: Yes it does change orbit and season, but not radically.
2: Depends on HOW it gets the 2nd moon, if it magically appeared and instantly orbits Earth then no.
3: Not much, except both Moon will perturb each other's orbit and probably affect Earth's rotation in the next millennium.
4: Yes it's possible, but not probable if the 2nd Moon is in Geosynchronous orbit.
5: Not significantly.
6: Well it depends on distance, our Moon is moving away from us because Earth rotates faster than it's orbit, but if the Moon orbits faster than Earth's rotation than Earth will bring it closer (like Phobos moon of Mars)
2015-11-16 1:59 am
If the second moon was closer than 3125 km above the Earth's surface, it would break up. Even at 12,000 km, the stuff on the surface of the moon would fall off the moon and fall to Earth. So lets assume that it was in orbit at about 38,000 km, which is 1/10th of the distance to the real moon.
No, it would not change the Earth's orbit.
No, it would not knock the Earth out of orbit.
Nothing in orbit AROUND the Earth can change the average orbit OF the Earth. Not unless it was thousands of times more massive than the Earth.
It would affect the length of the day by less than a second.
No, the moons would not collide. Remember, the second moon is at 1/10th the real moon's distance.
No, we would not feel lighter or heavier. But the oceans would feel the effect, with tides much higher than now; perhaps 100 times higher. That would be major flooding for coastal areas, for many kilometers inland.
Yes, it would be like the real moon moving to a distance of 38,000 km.
No, it would not change the Earth's orbit.
No, it would not knock the Earth out of orbit.
Nothing in orbit AROUND the Earth can change the average orbit OF the Earth. Not unless it was thousands of times more massive than the Earth.
It would affect the length of the day by less than a second.
No, the moons would not collide. Remember, the second moon is at 1/10th the real moon's distance.
No, we would not feel lighter or heavier. But the oceans would feel the effect, with tides much higher than now; perhaps 100 times higher. That would be major flooding for coastal areas, for many kilometers inland.
Yes, it would be like the real moon moving to a distance of 38,000 km.
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