How the Universe Works: Big Bang
What equation describes how matter formed from the energy of the BB
e=mc2
What would the universe be like if gravity were stronger?
everything will end up in black holes.
The first force to emerge from the BB was gravity. What would the universe be like if gravity were weaker?
everything would be falling apart and there would be no galaxy.
What did Edwin Hubble discover about galaxies at Mt.Wilson Observatory in 1929?
galaxies arent stuck in one place, that they are moving away from the earth.
what other two elements formed during the first three minutes of earths existence?
helium and lythien
atoms could not form until after the universe was one second old. what was the first element to form?
hydrogen
when astronomers say that the universe became transparent 380,000 years after the bb, what do they mean?
it took 380,000 years for the electrons to slow down and form atoms.
When were the atoms in water made?
moments after the big bang
How would the present universe be different if there were no temperature variations in early universe?
people would not be here today.
since matter and antimatter annihilate each other, how is it possible anything exist?
there is one more particle of matter than antimatter in the universe so matter overpowers antimatter to form our universe.
how do physicists study the BB?
by using a colider and having particles crash into each other at almost the speed of light.
