Science universe
Robert Dicke
Understood what they found
About how long ago do scientists believe the universe began?
13-14 billion years ago
Penzias & Wilson
Accidently discovered Cosmic background radiation
Theory that all matter and energy in the universe exploded 10-15 billion years ago and began expanding in all directions
Big Bang theory
Apparent shift toward shorter wavelengths of light when a luminous object moves toward the viewer
Blue shift
George Lamaitre
Came up with the idea of the big bang
Steady but faint microwaves from all over the sky
Cosmic background radiation
Radiation left over from the Big Bang is called
Cosmic microwaves background radiation
The study of nature, structure, origin, and fate of the universe
Cosmology
Unexplained high speed of galaxies going into outer space
Dark energy
Matter not visible through current methods, but observable through gravitational interactions between galaxies
Dark matter
An observed change in the frequency of a wave when the source or observer is moving
Doppler effect
The red shift of distant galaxies show that the universe is
Expanding
The Big Bang was what?
Expansion
Theory that matter distorts space
General relativity
What were the first elements created
Hydrogen and helium
Apparent shift when a luminous object moves away the viewer
Red shift
George Gamow
Russian born, "we should be able to hear through microwaves" and detect it
Guth
This astrophysicist said that the universe expanded faster than the speed of light known as the inflation theory.
Sum of all space, matter and energy
Universe
What is the universe made up of?
energy, matter/dark matter, spacetime
What do the initial moments after the Big Bang have in common with the universe as it exists now?
the universe began expanding then, and it is still expanding today
Three possibilities for the future of the universe
• universe Keeps expanding forever • universe stops expanding • universe contracts
