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Twinkle Twinkle Little (1 x 10 29 ) Stars

According to Pg 15 of the ESRT , Which star color indicates the hottest star surface temperature ? (1) blue ( 3) yellow (2) white (4) red. Twinkle Twinkle Little (1 x 10 29 ) Stars. We are on the Earth (4.6 x 10 9 years old) Earth circles sun in Solar System

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Twinkle Twinkle Little (1 x 10 29 ) Stars

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  1. According to Pg 15 of the ESRT, Which star color indicates the hottest star surface temperature? (1) blue (3) yellow (2) white (4) red

  2. Twinkle Twinkle Little (1 x 1029) Stars

  3. We are on the Earth (4.6 x 109 years old) Earth circles sun in Solar System (heliocentric) Solar system is in Milky Way Galaxy (≈ 13.2 x 109 years old) Milky Way Galaxy is in the Universe ( 13.7 x 109 years old)

  4. Dub set is here!

  5. The universe is big and it is expanding! Starlight informs us about a stars: age, composition, distance, velocity & more. Let’s study stars and their light…

  6. Dust--in a nebula--is pulled together by gravity. When the mass and heat reach a critical point, Hydrogen fusionbegins . The star is “born” and begins to emit light (radiation).

  7. Which process produces the energy that allows the stars of the universe to radiate visible light? (1) convection (2) Insolation (3) nuclear fusion (4) radioactive decay

  8. Stars live in a “tug-of-war” between fusion energy pushing out and gravity pulling in. When the hydrogen fuel runs out, what happens next depends on the star’s original mass.

  9. Our sun is a small star. What happens when it runs out of hydrogen fuel to fuse?

  10. What is the temperature of a “main sequence” star with a luminosity of about 50? Which star has about the same temperature as the sun, but is about 5000 times brighter (more luminous)?

  11. Luminosity Charts help to describe this Stellar Evolution.

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