Effects of dark energy on our solar system

[VaibhavP]

Is there any effect of expansion of world on our solar system?
i.e. Is there any change in distance between Earth and sun due to expansion of world?

 

[Nabeshin]

No, our solar system is a gravitationally bound system.

 

[phinds]

No, our solar system is a gravitationally bound system.

AND ... is far as is currently understood, so is our solar system and so is the local group. That means that NONE of those things will be affected by dark energy (well, actually, I think they ARE affected by the amount is simply trivial and is completely swamped by gravity.)

 

[VaibhavP]

ok...but the distance between moon and Earth is increasing..what is the reason behind that?

 

[phinds]

ok...but the distance between moon and Earth is increasing..what is the reason behind that?

Something to do with tidal force. I don't remember the details but it has NOTHING to do with dark energy.

 

[Ryan_m_b]

The distance of the Earth and Moon is increasing because as the Moon slows down the Earth's spin it gains energy boosting it to a higher orbit. This has the effect of slowing down our day and increasing the distance to the moon.

 

[BillSaltLake]

I'm semi-guessing here, but I think the effect on orbiting (bound) systems would be to increase the orbit radius R by ΔR/R ~ [time for 1 radian of orbit]xH. For the Earth-Moon, this would be ~ 1 part in a trillion.