Hello everyone!
A friend asked me this one: What is the minimum distance from the Earth to Mars, in kilometres?
He also showed me this: 1.8668509 x 10-6 pc
After searching a bit I've learned that the minimum distance from the Earth to Mars is about 54.6 million kilometres, but my friend says that the answer is not correct and that I have to look to the "formula?" he showed.
I ask you to give me a hand on this one, because I'm stuck...
Thank you!