Here are ten scientific theories, once commonly accepted, that are no longer valid. What will be the next to drop?

Stolen from Brian Keating at this tweet: https://twitter.com/DrBrianKeating/status/1661151985914236928

1. Geocentrism:

Geocentrism: The belief that the Earth is at the center of the universe, with all celestial bodies revolving around it. 3.

2. hlogiston theory:

2. Phlogiston theory: The theory that fire is caused by the release of an element called phlogiston.

3. Luminiferous aether:

3. Luminiferous aether: The concept of a hypothetical medium through which light waves were believed to propagate.

4. Caloric theory:

4. Caloric theory: The idea that heat is a fluid-like substance called caloric that flows from hot to cold bodies.

5. . Ptolemaic system:

. Ptolemaic system: A geocentric model of the solar system proposed by Claudius Ptolemy, which included epicycles to explain the motion of planets.

6. Vitalism:

Vitalism: The belief in a vital force or life energy that distinguishes living organisms from inanimate matter.

7. Steady-state theory:

Steady-state theory: A cosmological model suggesting that the universe is continuously creating matter to maintain a constant density as it expands.

8. Spontaneous generation:

Spontaneous generation: The belief that living organisms can arise from non-living matter.

9. Miasmatic theory of disease:

Miasmatic theory of disease:The theory that mental faculties and personality traits can be determined by studying the shape and bumps on the skull.

10. Miasmatic theory of disease:

Miasmatic theory of disease: The idea that diseases, particularly infectious ones, are caused by noxious or foul-smelling gases or "miasmas."