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nichos
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If gravity of the Earth is so powerful to hold the moon in orbit, why does she not drag in & squash to smitherings all on its surface?
Please forgive my ignorance, ......nick
Please forgive my ignorance, ......nick
nichos said:If gravity of the Earth is so powerful to hold the moon in orbit, why does she not drag in & squash to smitherings all on its surface?
Please forgive my ignorance, ......nick
nichos said:If gravity of the Earth is so powerful to hold the moon in orbit, why does she not drag in & squash to smitherings all on its surface?
Please forgive my ignorance, ......nick
nichos said:Nature is full of large coincidences.
nichos said:Also when they extract info from objects thou. or billions of light years away & already dead just as long in Earth time. I can't get over that what I see when I look up is not real but, only the sparks of long ago.
...nick
I agree except it isn't a circle, it's an ellipse. The same mass that the gravity acts on also affects the moon's momentum. It wants to travel straight, but the Earth's gravity makes it curve, so it falls around the earth.Eric Bretschneider said:The moon isn't stationary. If it were then the Earth's gravity would pull it down to a spectacular collision (which we wouldn't survive).
Roughly speaking the moon is moving sideways. The combination of the moon's motion and the Earth's gravity means that the moon essentially falls forever in a circle around the earth.
Yeah but it gets harder and harder as the years go by.CWatters said:Gravity is quite weak. A human can overcome the gravity of an entire planet.
Gravity is a fundamental force of nature that attracts objects with mass towards each other. Its strength is determined by the mass and distance between objects. If gravity were to be too strong, it would cause objects to collapse in on themselves, making it impossible for the universe to exist as we know it.
Gravity is considered to be one of the weakest forces in nature, with a strength that is approximately 10^-38 times that of the strong nuclear force. This is why we can easily overcome the pull of gravity by jumping or picking up objects.
Based on our current understanding of physics, it is unlikely that gravity will ever become significantly stronger than it is now. This is because the strength of gravity is determined by the mass of objects, and the total mass of the universe is thought to be constant.
While gravity is generally considered to be a weak force, there are some extreme cases where it can become significantly stronger. For example, black holes have incredibly strong gravitational pull due to their immense mass and density.
Einstein's theory of general relativity explains how gravity affects the fabric of space and time. In areas with strong gravitational pull, such as near massive objects like planets or stars, the fabric of space-time is warped, causing objects to be pulled towards each other.