If Gravity Can Exist Without Mass, That Could Explain Dark Matter https://www.universetoday.com/167332/if-gravity-can-exist-without-mass-that-could-explain-dark-matter/ #cosmologicalstructures #gravitationallensing #topographicaldefect #gravitationalfield #phasetransitions #missingmass #darkmatter #cosmology #giantarc #science

A few weeks ago, I posted an example of a #projectile #trajectory in a uniform #GravitationalField without #AirResistance. It’s a school-level exercise but it was nice to produce an #animation for it. To model air resistance is a bit more tricky as any #fluid, including #air, is complex and does not necessarily behave as you might expect. Pt1...