1. A Solar System is Born 4/25/14 IN: What do you think the planets are made of? 19-1a pgs. 510-514

2. Solar System – composed of the sun (a star) and the planets and other bodies that travel around the sun.

3. Nebulas – a large cloud of dust and gas in interstellar space. – the location of star formation Horsehead Nebula

4. Omega Nebula

5. Cat’s Eye Nebula

6. Aquila Nebula

7. Solar Nebula – the name of the nebula that formed our solar system.

8. Planetesimals – the tiny building blocks of the planets that formed as dust particles stuck together and grew in size.

9. Planetesimals to Planets

12. Orion Nebula

14. Hubble image of protoplanetary discs in the Orion Nebula, a light-years-wide "stellar nursery" probably very similar to the primordial nebula from which our Sun formed.Orion Nebula

16. OUT: What role does gravity play in our solar system?

17. A. B. C. D.