Earth In The Universe

Topic Overwiew

Celestial Object: Anything visible above Earths atmosphere

6000 visible with unaided eyes

Origin And Age Of The Universe

Universe started with big bang

The explosion that started the universe

Evidence

Cosmic background radiation

Shift of light from different galaxies

Red shift=Longer wavelenghths

Blue shift=Shorter wavelengths

Mostly red shift (Universe is expanding)

Universe is 13.7 billion years old

Universe: All matter and energy

Evidence For The Big Bang

Cosmic background radiation