Studied by 0 people
Looks like no one added any tags here yet for you.
Oscillating Theory
Albert Eintein’s favored model.
Special relativity
Resulted in the expansion of universe for a time.
Steady State Theory
Expanded BUT did not change its density -
Matter was inserted into the universe as it expanded to maintain a constant density.
Proposed by astronomers Fred Hoyle, Thomas Gold, and Herman Bondi
Multiverse
One of many “bubbles” that grew as part of universe
Inflationary Universe from Inflation Theory
Inflationary Universe
Some 13.8 billion years ago, the universe began with a rapid expansion. (lasted a fraction of a second)
Nine billion years after the universe began, its expansion started to speed up, driven by an unknown force. “dark energy”
Encounter
One of the earliest theories for the formation of the planets
Rogue star passes close to the Sun
Nebular
A cloud of gas and dust circulates till it had a proto sun in the middle.
Proto sun attracted the particles, which then collided and solidified
Protoplanet
The current working model for the formation of the Solar System
Planetesimals
Unidentified instability resulted in the pulling of dust particles toward each other
Protoplanets
planets - Planetesimals combined with other planetesimals
Note 
Flashcard (41)