Eli5 How do you navigate in space?

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There’s no north or anything, are there coordinates or you just point at a planet and go for it?

In: Physics

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Anonymous 0 Comments

I out solar system you use the [Ecliptic_coordinate_system](https://en.wikipedia.org/wiki/Ecliptic_coordinate_system)

The sun is ins the center and the zero plane is the orbit of the earth. That makes it simpler for us to use. The direction is measured relative to the stars. The relative moment of start is minuscule in our solar system, the closes might shift a fraction of a degree so you do not use the.

There is north for orbits too it is an [Orbital_pole](https://en.wikipedia.org/wiki/Orbital_pole). You use the right-hand rule. Take the right hand and curve your finger and point up with your thumb [like this](https://en.wikipedia.org/wiki/Right-hand_rule#/media/File:Right-hand_grip_rule.svg). If the finger curves like the orbit the tum point to the orbital north.

For position in the solar system, you look at the angle of planets and the sun relative to the stars and you can determine location. Radio communication from earth has delays and you can get the distance to earth and the speed from the doppler shift.

You do not point to a planet to go there. You make a burn so you and the planet arrive at the same time. You can compare to if you would throw a ball to someone that is running. You aim to a point in front of them so they meat there. If you aim at where they are you will miss them.

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