@neiltyson Einstein's "theory" of relativity. When is it no longer a theory but a law? Any experimental evidence anywhere proving it wrong?
-
-
@neiltyson Excellent, I understand. Thank you!!Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.