The Solar System Theories

Question 1

Protoplanet Hypothesis

Answer 1

Cloud of gas and dust 10m km in diameter rotated slowly, then collapsed. Smaller cloud meant faster spinning, and compression made the inside hot, and also hydrogen fusion, so TADA sun was born. Planets and moons were from plate-like disk with a whirlpool where matter accumulated bc friction and shrank into compact masses

Question 2

Vortex Theory

Answer 2

Descartes was like, pre-solar materials moved in a whirlpool way.

Question 3

Buffon’s Collision Theory

Answer 3

The sun collided with a huge comet and the debris made planets.

Question 4

Nebular Hypothesis or Fog Theory

Answer 4

Slowly-rotating cloud of gas or solar nebula collapsed, flattened, and a hot central region became the sun, the rest, planets.
Proven wrong bc solar nebula was calculated to be unable to planet.

Question 5

Solar Nebular Theory

Answer 5

Developed based on Nebular Theory. Includes interstellar dust.
Collapse
Spinning
Flattening
Condensation
Accretion

Question 6

Geocentric Model

Answer 6

Everything goes around us, Earth. Ptolemy proposed it.

Question 7

Heliocentric

Answer 7

The sun is the center of all things in the solar system. Copernicus, even though Aristachus said it first… Ari didn’t have enough supporting details fam.

Question 8

Encounter Hypothesis

Answer 8

Sun met rogue star and the gravitational interaction pulled away hot gas. Star gas became less dense outer planets, and sun gas became inner planets.