What form of energy is lost when a planet changes orbit?

[Parbat]

In case Mars jumps from it's orbit to earth's,then will it lose it's energy
in electromagnetic radiation form or something else happens?
I found from Doc AL that only charged particle loses energy in electromagnetic form.Then in which form will it lose it?

 

[mathman]

In your scenario what made Mars jump?

 

[Parbat]

lets not talk about 'mars jumping'.In a eliptical orbit,the planets have a different energy & when the planet moves from higher energy position to lower energy position,in which form does it lose it?Is it electromagnetic or something else?

 

[Vanadium 50]

In an elliptical orbit the satellite speeds up as it moves closer in, exchanging potential energy for kinetic energy.

 

[Parbat]

In an elliptical orbit the satellite speeds up as it moves closer in, exchanging potential energy for kinetic energy.

u mean energy remains constant.
But if there is any energy change takes place,how will the planets lose it?

 

[mathman]

It depends on what causes the change to take place, such as a collision with another body. It doesn't take place by itself, in contrast with charged particles.