a youssef murad 15 éve
412
New Map
Our expanding universe
Exploring our Universe
Solar system
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 releasing large amounts of energy
Elements formed due to nuclear reactions
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