Science a GoGo's Home Page Forums General Discussion Physics Forum What to do to get NOBEL prize for amatore test ?

As a final challenge to you I will give you a problem I would like you to think about.

If earth were covered completely in thick black clouds and you couldn't see the sun or any stars ... could you detect it was moving.

The obvious answer with its rotation is yes because we can see coriolis effects in many things.

Now the harder one could you detect that the earth was rotating about the sun even though you couldn't see it.

The answer is yes ... your challenge is to work out how

If you want a bonus challenge from there would it be possible to work out the sun and earth were rotating about the galactic centre


Good luck let me know if you need hints how to do it.