1. The universe and us the light version
U3Astronomy
The universe and us
the light version

2. Big bang
The universe was created 13.7 billion years ago, the first stars 200 million years ago made up of Hydrogen and Helium 100 to 1000 x size of our sun.
stars
As they died and new ones formed through time heavier elements were created around the universe.

3. Our solar system and planets
Pluto has been down graded from planet status?

4. Galaxies
Are a huge collection of stars and dust first created 500 ml years after the BIG BANG, not as we see them today but irregular unlike our MILKY WAY.

5. 180 bln stars 180 lt years across.
we are part of the Milky waygalaxy
180 bln stars 180 lt years across.

7. OBSERVING THE HEAVENS
WE ARE DRAWN TO THE NIGHT SKY TO SEE OUR PAST PRESENT AND FUTURE

8. HOW TO OBSERVE AND WHEN

9. Observations we can observe, planets, stars, constellations, nebulae, galaxies, atmospheric phenomenon, man made satellites and much more. Looking from earth or using space telescopes like humble or ground based radio and visual observatories or with the naked eye, binoculars or telescopes.

10. Constellations our next topic

11. How we made sense of the heavens
U3Astronomy
The universe and us
the light version
Next time
CONSTELLATIONS
How we made sense of the heavens