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Recent discovery of negative mass...this is (in one or more respects) tantamount to anti-gravity, isn't it?
Please forgive me if the question is ignorant, but I've not been involved in "real physics" for many decades now.
Recent article describing the creation and observation of negative mass:
http://www.bbc.com/news/science-environment-396429...
Given (quote from the article)
With negative mass, if you push something, it accelerates toward you
That means that acceleration due to gravity would cause a negative-mass object to accelerate in the direction opposite that of the pull of gravity...right? So: any object made of negative mass would act in a gravitational field much as would a positive-mass object in an equal-but-opposite anti-gravity field...right?
So: imagine a space launch vehicle (goal: reach Earth orbit altitude and release payload) made of (room temperature) negative matter. Only fuel for directional rockets required!