1. Formation of a Solar System
Who's your daddy?

2. Solar System Composed of _____ The sun 9…or I mean 8 planets
Other bodies that travel within this area

3. What is space?
Boundless 3d extent in which objects and events have relative position and direction

4. Whats in space
-Space has helium, hydrogen, and tiny dust particles containing elements
Mostly gas and elements

5. Legistics Very old Very cold (10C above 0 Kelvin)
-Particles in space move slowly due to cold temperature
-Particles first form Clouds

6. Free floating Particles
These things are floating in space, they form clumps and mass together
These particles clump up

7. These cLumps! -The clumps crash into each other gaining mass.
-As size increase it begins to take gravity which also increases

8. Ingredients: clumps called nebula
Gases
hydrogen
helium
Dust: has mass
Iron
carbon

9. - inside the Triangulum Galaxy
Nebula NGC 60
- inside the Triangulum Galaxy
-estimated distance
2.4 million light- years away

10. The "Pillars of Creation" from the Eagle Nebula

11. The Eagle Nebula in its entirety.

12. Where form?
Between stars

13. What 2 forces pulls nebula together?
Gravity pulls the dust particles together
The gases are in constant motion preventing the gravity from clinging together….a.k.a. pressure
Remains 1 big cloud

14. Then…………. Nebulas collide and collapse inward
Gas pressure decreases and gravity takes over
Strong attraction between the dust and gas starts rotating forms a flat disk

15. Birth of a star
As rotation continues so much mass piled up and gets so hot --hydrogen fusion began.
Powers the star
Blew dust and gas particles out into space

16. Nebulas collapse.....
Gravity causes the nebula to collapse inward causing more gravity!!!
(Remember, closer together = stronger gravity!)
Begins to rotate and flatten into a disk shape
Bits of dust stick together when they collide to form planetesimals (tiny pre-planets)
These collide, stick together & form planets

17. Nebula gas cloud starts to collapse due to gravity
Nebula begins to rotate
Flattens into disk shape
Planetesimals appear
Planets begin to form
Our solar system

19. Planet formation
Planetesimals: small chunks of dust and gases not in the central disk or star combine and form planets
Collisions of these increased the rate of growth

20. Planets form....
Inner planets -formed from dense pieces, strongly pulled (due to their mass) by gravity towards the new star center (called a protostar = baby star)
gas giants
collected large amounts of gas (H & He) & smaller bits of dust in the cooler, outer areas of the spinning nebula far enough from sun to also collect ice

22. Review What are the clumps called that make up the solar system?
What 2 gases make up the solar system?
What shapes does the solar system take on when it starts to form?
What process powers the sun?
What are the chunks called that form planets?