The universe is represented as a flat grid. Earth, moon and sun dent this grid due to their mass. All heavenly bodies must then move along the depressions. However, their centrifugal force works against it.
ZDF/Terra X/ T. Schultes/ Nikolai Holzach
CC BY 4.0
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Source of the original documentary/URL zur vollständigen Doku: <a rel="nofollow" class="external free" href="https://www.zdf.de/dokumentation/terra-x/faszination-universum-die-schwerkraft-der-dirigent-der-welt-100.html">https://www.zdf.de/dokumentation/terra-x/faszination-universum-die-schwerkraft-der-dirigent-der-welt-100.html</a>