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Question
Does anti-matter fall up or down?
Hi Kevin,
Anti-matter falls down. Although many properties of anti-matter are the opposite of ordinary matter, gravity isn't one of them. So far, we've not found any matter than exhibits anti-gravity properties, although the mechanism behind "dark energy", which apparently produces a repulsion in the universe, is unknown.
Cheers,
Prof. James Gort
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James Gort
Expertise
Questions on observational astronomy, optics, and astrophysics. Specializing in the evolution of stars, variable stars, supernovae, neuton stars/pulsars, black holes, quasars, and cosmology.
Experience
I was a professional astronomer (University of Texas, McDonald Observatory), lecturer at the Adler Planetarium, professor of astrophysics, and amateur astronomer for 42 years. I have made numerous telescopes, and I am currently building one of the largest private observatories in Canada.
Publications
StarDate, University of Texas, numerous Journal Publications
Education/Credentials
B.A. Physics and Astronomy
M.Sc. Physics
Ph.D. Astrophysics
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