Ch3 Origins of the universe Flashcards
1
Q
The universe
A
Vast area of space made up of galaxies stars and solar systems
2
Q
A galaxy
A
System of millions or billions of stars ,gas and dust held together by gravity.
3
Q
Solar system
A
A star and all of the objects that travel around it-planets , moons,asteroids,comets and meteoroids
4
Q
Big Bang
A
13.8 billions years ago
Single moment when entire universe was held in a single zone.
5
Q
Edwin Hubble
A
Discovered universe was expanding and that all objects in universe were moving away from each other.
6
Q
Hubble space telescope
A
Launched by NASA 1990
Discovered age of universe.
7
Q
Matter
A
Gravity. Allowed particles to form matter
Formed planets stars and all other known structures
Formed all structures within universe
8
Q
The Big Bang timeline
A
The Big Bang First particles of matter created First atoms made First stars appeared First galaxies appeared Universe cooling and expansion accelerates Birth of sun Birth of our solar system Start of life on earth Extinction of dinosaurs Modern humans
