The Sun

1
Chapter 26The Sun
The Sun

• Is a star
• Is a main sequence star
• 1 million Earths would fit inside the sun
• 1.4 million kilometers from earth

2

• Hertzberg- Russel Diagram

• Shows stars in their different stages

3
(No Transcript)
4

• The union of hydrogen atoms into helium
• 4H 1 He
• What happens when a star runs out of its fuel
  hydrogen?
• It either becomes a red giant or a supergiant
• Our sun will become a red giant

• Fuel for the Sun is Fusion..

5
Star life cycle
6
15,600,000 oC dense!The apparent bright yellow
surface of the sunOuter layer around the
photosphere reddish appearance where solar
prominences occur

• Suns layers
• Core
• Photosphere
• Chromosphere

7
Corona

• Thin outer atmosphere.only part of the sun
  visible during a total solar eclipse

8

• Solar Prominences

• Solar Prominences

9

• Solar Flare

• Strong magnetic storm on the surface of the sun
  thousands of miles tall!

10

• Sunspots

• Dark spots on the photosphere
• Areas of high magnetic field - 1000X stronger
• They appear to move so they gave proof that the
  sun rotates

11

• Flow of electrically charged particles off of the
  sun (p and e-)
• Cause auroras

• Solar Prominences

12
What is the center of our solar system?

• Geocentric

• Ptolemys theory of an Earth-centered solar
  system
• Geo mean EARTH
• -centric means CENTERED
• Early astronomers thought that everything
  revolved around the earth WRONG!!!!!!

13

• Heliocentric

• Copernicus idea of a sun-centered solar system