Gravity Isaac Newton was the first to account for gravity. An attracting force. Gravity =...
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Transcript of Gravity Isaac Newton was the first to account for gravity. An attracting force. Gravity =...
GravityIsaac Newton was the first to account for gravity.
An attracting force.
Gravity = mass/distance
1. Massive objects have more gravity
2. Gravity lessens with distance.Gravity
General RelativityAlbert Einstein revised Newtonian gravity.
Mass warps space gravity is not instantaneous. It moves at the speed of light.
For small masses, Newtons gravity still works.Space-Time Warping
Doppler EffectObjects moving away from you stretch wavelengths
Objects moving toward you compress wavelengths.
Everythings MovingIn space, everything is moving.
The universe is expanding like raisin bread.
Galaxies are all red-shifted.
The farther away, the faster they move.
Big Bang TheoryAll energy was concentrated in a small area, then released in an instant.
Mostly hydrogen and helium.
As the universe cooled, it became lumpy and formed stars and galaxies.Big Bang TheoryEvidence for Big Bang?
Background radiation radio/microwaveDoppler Effect = red shift.Map of Universe:Background Microwave Radiation