why it is much more difficult to send a satellite to the sun than it is to send it outside the solar system.

Question

A friend told me that with the current engineering we cannot send a satellite to the sun (just reaching it, not survival) because we would have to nullify the velocity of earth with respect to the sun. I’m not sure I understand and not sure if that is true.

In: Physics

Answer 1

Yes this is true. For any kind of higher orbit you need more speed and lesser orbits less speed. If you’re already going fast, you have to spend energy to slow down.

https://www.theatlantic.com/science/archive/2018/08/parker-solar-probe-launch-nasa/567197/