Why are planets revolves around the sun? and why they didn't crash to it?

Question

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Answer 1

It is more like they are falling around the Sun. Earth is always falling into the Sun, but it's sideways orbital speed keeps moving Earth to the side of it's direction of fall. So the direction it would have to fall to hit the sun keeps changing and Earth has to keep starting over to get up speed falling in the new direction. This just keeps going on forever, falling toward the Sun but always missing it to one side. Of course, this takes enormous speed on the part of the Earth, about 66,000 miles per hour sideways all the time. Closer planets must move sideways faster, because they are closer to the Sun and are pulled down to it more strongly than distant planets. So Mercury moves much faster than Earth and Pluto much slower. But it is the same principle.

Answer 2

If the planets didn't revolve around the sun or didn't revolve themselves, there wouldn't be such thing as day, week, month, or year, not even second or nenosecond. They don't crash into each other because the planets are separated from a very far distance.

Answer 3

It has to do with their velocity of motion. If it was significantly less that what it is the planets would spiral towards the sun and crash into it. If it was much greater then it is, they would spiral away from it. As it is the orbits are stable, there is a balance between the velocity of the planets forward motion and the sun's gravity that causes them to revolve around it.

Answer 4

The sun has enough gravity to keep the planets revolving around it. The sun doesn't have enough gravity to pull the planets straight into it.

Answer 5

Planets rotate around the sun because of the gravitational pull the sun has on the 9 planets.

Answer 6

the planets are trying to take a linear path through the universe, but the enormous sun holds them near by its gravity. the 9 planets are in pretty much equalibrium with the gravity of the sun, but i am sure the planets are getting either farther or closer to the sun as the years go by.

Answer 7

Because when space has no gravity, then the other planets will just be standing still, but, when different planets have different gravities, then it would make them go around the sun.

Answer 8

That's because the gravity pulls it in but the planet's velocity pulls it out which makes an even amount of force both ways.

Answer 9

You need to study Kepler's laws of planetary motion. Basically the centrifugal force imparted on an orbiting body is equal to the centripetal force imparted by the centre of gravity of a binary system. All orbiting bodies are in free fall, hence weightless because gravity is negated. If their free fall trajectory equals the curve of the focus of their orbiting centre they are said to be in orbit and all forces are exactly equalled and stasis is the result. Jules, lecturer, Australia.

Answer 10

Due to their speed they are trying to fly away from the sun but gravity is keeping them in place.
If you tie a ball to a piece of string then spin it round your head it forms a circle now cut the string, the ball shoots off at a tangent