Solar System Formation

Solar System Formation

Published on 21 October 2022
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Transcript
00:00
The start of our Sun was from the violent death of another star. The passing of a supergiant.
00:05
A Supernova, caused by a rebound explosion where the heavy elements bounces off the iron core, sent shockwaves causing dust in space to move.
00:13
The dust that had been moved would collapse under its own weight, and gravity would begin to pull the particles inwards towards the center. Those particles, however, would resist and slow down because the gravitational pull from the center isn't strong enough.
00:18
FLATTENS OUT
00:18
Spinning counterclockwise (Shockwaves sent dust moving in one direction).
00:22
Coalescing to the center.  This is the stage that it hasn't accreted much yet. 
00:25
Coalescing (gathering materials).
00:25
Accretion disc (Planetary disc) Using gathered materials, it grows larger.
00:29
The early stage of a star,  where nuclear fusion hasn't occur yet. Right now, it's still  a ball of interstellar gas.
00:29
Protostar
00:29
^Matter gathered to the center. ^
00:34
Elements begins to stick together...
00:34
As Mass increases, Gravity increases, Pressure increases, Temperature increases....
00:39
Nuclear Fusion occurs.
00:39
Elements (Hydrogen+Hydrogen=Helium) collision.
00:45
Our Sun, or a newly born star has finally appeared.
00:48
Accretion disc
00:48
Earlier, INSIDE the accretion disc forms the Sun, now it begs the question: What of the accretion disc itself?
00:48
What happens to the dust and gas that floats outside the fusion of the Sun?
00:53
The Sun 
00:55
Solar Winds blowing the dust and gas surrounding the accretion disc.
00:56
Gas planets or gas substance planetesimal are blown further away due to them being lighter. Rock planets or rock (metal and minerals) substance planetesimal are heavier, thus they don't get far.
00:57
That's why outer planets (aka Jovian) are gas giants while inner planets (aka Terrestrial) are rock planets.
01:00
--    + -- +
01:00
--    + -- +
01:00
--    + -- +
01:00
Electrostatic forces with other forces for an instance Van der Waals force collides the planetesimal together,  forming...
01:04
Protoplanets result from the planetesimals colliding against each other which made small asteroids and small planets. Water droplets are the same, a small droplet might collide with another droplet, forming a bigger droplet.
01:08
Raindrops that fell, coalesce into puddles that accretes into larger puddles, are exactly how the protoplanets slowly absorb the dust and gas, turning into real planets that orbit around the Sun.
01:11
Protoplanet's accretion lead to the creation of real planets. (Tho, I couldn't find pictures that have accurate counterclockwise accretion)
01:14
Why Is the Sun in the center of our solar system?
01:14
Not every star forms a system, since the planets are made from the planetary disk that formed the Sun, the planets would stay in the same plane due to the familiar gravitational pull.
01:14
Why are planets in the same plane?
01:19
Why are planets moving in one direction? That's because from the start of the solar system formation, dust that stay at rest was thrown into chaos by Supernova shockwaves. Those dust would forever move in one direction. Even if the dust and gas turns into planets, it would orbit the same counterclockwise of the accretion disc.
01:23
How do we know?
01:23
Thank Benmu, the asteroid. Its composite travels back 4 and a half billion ago, made out of the building blocks of the solar system: Chondrules. Molten rocks from the accretion disc.
01:27
THANK YOU FOR WATCHING!!!