How is an object proved to not be from earth

[lorrad]

How is an object proved to not be from earth?

I am sorry if this is not the right forum as I am new here.

 

[Evo]

How is an object proved to not be from earth?

I am sorry if this is not the right forum as I am new here.

Do you mean a meteorite?

 

[lorrad]

Yes or a exterrestial object of some type

but a meteorite is a good example

moon rocks

 

[Evo]

Here.

http://meteorites.wustl.edu/lunar/howdoweknow.htm

 

[lorrad]

wow thanks

 

[Evo]

wow thanks

You're very welcome.