Our Star - Our Star Our IsayLive,Live,becauseoftheSun,

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Our Star Our Star Anne Sexton (1928 – 1974) Anne Sexton (1928 – 1974) American poet American poet I say Live, Live, because of the Sun, I say Live, Live, because of the Sun, The dream, the excitable gift. The dream, the excitable gift.
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The Sun’s Energy Source The first scientific theories involved chemical reactions or gravitational collapse. chemical burning ruled out…it can not account for the Sun’s luminosity conversion of gravitational potential energy into heat as the Sun contracts would only keep the Sun shining for 25 million years late 19 th -century geological research indicated the Earth was older than that Development of nuclear physics led to the correct answer the Sun generates energy via nuclear fusion reactions Hydrogen is converted into Helium in the Sun’s core the mass lost in this conversion is transformed into energy the amount of energy is given by Einstein’s equation: E = mc 2 given the Sun’s mass, this will provide enough energy for the Sun to shine for 10 billion years
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Nuclear Energy Fission Fusion
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Striking a Balance The Sun began as a cloud of gas undergoing gravitational collapse. the same heating process, once proposed to power the Sun, did cause the core Once begun, the fusion reactions generated energy which provided an outward pressure. This pressure perfectly balances the
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Our Star - Our Star Our IsayLive,Live,becauseoftheSun,

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