1. Facts About
Our Universe

2. The Universe


The Entire Universe
Size
Not Sure
 Maybe Trillions of Years
 May be Infinite


3. The Observable Universe

The observable part of the Entire Universe
Can only observe objects when the universe became
transparent. It was opaque before. (when no light)
 Information before this obtained by gravitational
waves and radiation



Finite in Size
Radius of Observable universe


From earth to edge: 46.5 billion light years
Diameter: 92 – 94 billion light years

4. Age of Universe




Different ways of calculations
Big Bang Theory: 13.7 billion years
Other : 15.8 billion years
Estimate Range:10 – 20 billion years

5. Composition of Universe

Things we can observe and see





Heavy Elements : Earth, planets, moons:
Neutrinos:
Stars
Free Hydrogen & Helium : Nebulas etc
Known Stuff
Total
0.03 %
0.3 %
0.5 %
0.4%
5%
Mysterious Stuff in the Universe
Dark Energy
 Dark Matter
Mysterious Stuff

Total
70 %
25%
95%

6. Heavy Elements
Cosmological
Composition of the Universe
Composition
0.03%
Neutrinos
0.3%
Stars
0.5%
Free
Hydrogen and
Helium
4%
Dark Matter
25 %
Dark
Energy
70 %

7. Heavy Elements
Cosmological
Composition of the Universe
Composition
0.03%
Neutrinos
0.3%
Stars
0.5%
Free
Hydrogen and
Helium
4%
Dark Matter
25 %
Dark
Energy
70 %