- #1

- 948

- 2

Thanks

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter Bassalisk
- Start date

- #1

- 948

- 2

Thanks

- #2

- 518

- 63

Thanks

When the earth is closer to the sun it is moving faster, and therefore has more kinetic energy than when it is further away, so the total energy stays the same, as kinetic energy gets transformed into gravitational potential energy and vice versa.

- #3

- 948

- 2

When the earth is closer to the sun it is moving faster, and therefore has more kinetic energy than when it is further away, so the total energy stays the same, as kinetic energy gets transformed into gravitational potential energy and vice versa.

But why does earth do this? Isn't it more simple for "her" to just have the same energy over and over ?

- #4

- 15,415

- 686

Circular orbits are essentially an impossibility. Any deviation of orbital velocity from that required for a circular orbit will result in an elliptical orbit.

A much better question is "why is the Earth's orbit so close to circular?"

- #5

- 948

- 2

- #6

- 518

- 63

To have exactly the right speed for either parabolic or circular orbits have a very low probability. i.e. 0 chance of occuring.

- #7

- 948

- 2

To have exactly the right speed for either parabolic or circular orbits have a very low probability. i.e. 0 chance of occuring.

I get it now, thanks!

Last edited:

Share: