So, Negative Gravity Is a Thing

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by Super User, 6 months ago
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In nature, most of our basic forces both attract and repel. In fact, gravity is the only exception. But, according to theorists, sound waves actually have negative gravity.

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Sources:

https://arxiv.org/pdf/1807.08771.pdf
https://phys.org/news/2018-08-phonons-mass-negative-gravity.html
https://physics.aps.org/articles/v12/23
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.134516
https://www.scientificamerican.com/article/sound-by-the-pound-surprising-discovery-hints-sonic-waves-carry-mass/
https://www.livescience.com/63305-sound-waves-negative-gravity-mass.html
https://www.sciencealert.com/physicists-say-there-could-be-a-strange-source-of-negative-gravity-all-around-us

Images:

https://www.youtube.com/watch?v=aPswnDcteS4
https://www.nasa.gov/mission_pages/swift/bursts/new-phenom.html
https://www.youtube.com/watch?v=eO7BfiPvN38&feature=emb_logo