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Stars. Stars. Our Sun is one type of star Create their own light Nuclear fusion generates energy Atoms slam into each other at high temperatures and velocities to form larger heavier atoms Classified based on: size brightness temperature luminosity (brightness). Types protostar
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Stars Our Sun is one type of star Create their own light Nuclear fusion generates energy Atoms slam into each other at high temperatures and velocities to form larger heavier atoms Classified based on: size brightness temperature luminosity (brightness)
Types protostar main sequence dwarf giant super giant neutron Colors blue blue-white white yellow red-orange red Stars
“Y-axis” = absolute magnitude (brightness) “X-axis” = star temperature (reversed) Stars: HR Diagram • Hertzsprung-Russell diagram organizes stars by temperature, brightness and groups by color and type Star Types are grouped together
Our Sun • Our Sun is merely a spec in the Milky Way • the Sun and Earth are located 2/3 away from center in one of the spiral arms • Sun orbits central Milky Way at about 235 km/s around the center of the galaxy You are here!
Let’s Check… • Stars are classified by 4 major things: What are they? • What graphic do we use to compare stars? • The 4 major colors of stars are _?_. • Will our Sun go supernova? Why or why not?
