hi guys. if astronomical unit is used to find average distance of the earth from the sun. so how we can find out the distance between the planets like distance between Mars and Venus etc. how we can find out the distance between the planets and the sun .plz don't spam and answer if you know.
Answers
We may send light rays and calculate the distance by multiplying the time taken by the ray to reach the given place by 3×10^5 mtrs.
that not the case !
astronomical unit is the average distance between earth and sun
which is used to measure distance within our solar system! !
infact it is smaller unit than light year and parsec and astronomical unit is also used to measure distance of other planets from our earth !!
so , if someone wants to measure distance between any other planets
there are many ways for ex- parallax method(steller parallax ,trignometric parallax) is widely used to find distance between planets
Astronomers can use parallax to find distances to objects much farther even than planets
Now astronomers have technologies to measure distances to other planets more directly. When they have a spacecraft at another planet, they know the time it takes a radio signal to travel between Earth and the spacecraft. they can also send a powerful radar signal toward a planet and time how long it takes for the echo to return. Astronomers know how fast these signals travel (the speed of light), so measuring how long they take makes it easy to calculate the distance very accurately.
