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Solar system

Sun formed

Planet cools after collision with planet tesmails forming moon

Electro magnetic field shielding against solar winds

Hot ball of rock, iron catastrophe, molten iron sank to core

Matter would pile due to gravity to form dust , dust to rocks, rocks to lumps, lumps to planetesmials

formed solar nebulae ( galaxy)

energy released from star form matter

Stars

Explosion of star in a gigantic paroxysm called super Nova releasing large amounts of energy

more High order Elements are formed due to more nuclear reactions and explosion of generation of stars

Nuclear fussion converting hydrogen into helium started forming light and heat and therefore sun

Matter came together but undistributed due to gravity to form large objects

Big Bang

Matter was not uniformly distrubted, causing formation of uneven clumps then galaxies then large objects then planets

Hydrogen, helium, and lithium formed from the simpliest of particles

Exploded 12 billion years ago and universe expanded

One Geometric point