2. Our sun does not have a solid surface.
Most of the energy comes from the core
and is radiated out to the surface like
convection in boiling water. In the core H
Is converted to He. When the sun runs out of H the core will shrink, He will be converted to O2 and C. The core will push out and the sun will cool to become a Red Giant.

3. Sun spots are darker because they are cooler
Solar Flare:
Solar flares are the most powerful explosions in the solar system.
Packing a punch equal to a hundred million hydrogen bombs.
Our sun is on an 11 year cycle for solar flare activity. During violent activity the sun ejects
particles that bend our magnetic field, interfering with our power lines, overloading them,
causing power outages. This is also a time of increased Aurora Borealis.
Solar Wind:
Created from the sun. How we know? Comet and asteroid tails always point
away from the sun.
Astronauts wear suits when they go on spacewalks to protect them from extreme
cold (dark side of planets can be -170C and the light side +200C.) Their visors
are darkened to protect them from UV rays from the sun.

7. 8.5 light years away.
Brightest star in our night sky
We begin our calendar
by this star’s position.
34 light years away
In Constellation Gemini
3rd brightest star in our night sky

8. Rigel:
light years away
In constellation of Orion
Brightest star in Orion
640 light years away
In constellation of Orion
May go supernova while
humans inhabit the earth
In our milky way
In constellation Taurus