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Published byTodd Tucker Modified over 9 years ago
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What is a star? A big ball of gas & nuclear fusion
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Nuclear fusion is the explosion of energy when atoms combine. ** Intense gravity fuses Hydrogen into Helium
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Man made nuclear fusion
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Star sizes
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The color of stars indicates the temperature of stars - blue is hottest - red is coolest
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Binary star system is a star system with two stars
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A scatter scatter graph that shows the relationship between star’s absolute magnitudes and temperature of the stars. *** Known as a H-R Diagram
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The Sun
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Is a middle size class G star.
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Sun spots Areas of the sun where the gas is cooler.
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Coronal Mass Ejections Large amounts of electrically charged gas are ejected suddenly from the Sun’s corona. Can cause disruption in satellite transmissions or even shut down all electro-magnetics.
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Solar flares Explosion of gas from the Sun’s surface
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Solar prominences Loops of gas connecting sun spots.
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Birth of stars The gas and dust are pressed together until nuclear fusion occurs. Stars are born when the dust and gas of a NEBULA are pulled together by gravity.
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Proto star The earliest stage of a star. (Baby star)
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Nebula Stellar cloud of gas and dust. The birthplace of stars
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Birth of stars
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Star death A star dies when it runs out of fuel
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How long a star lives depends on the amount of mass it has. Big stars burn fuel faster
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A light year is the distance light travels in one year. is measured In light years. Stars distance
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How can we measure star distances?
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Parallax The apparent movement of stars Based on the change in Earth’s position Uses the principle of triangulation.
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Apparent magnitude How bright a star appears to be
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Absolute magnitude How bright a star actually is.
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Fate of Stare
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Small and middle size stars expand out into red giants and then shrink into a White dwarf
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A white dwarf is a very small and cool, formed when middle size stars die
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Giants and super giants can blow up into a supernova An exploding star
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The remains of a supernova can become either a neutron star or a black hole
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Neutron star Dense remains of a super nova that is smaller than a white dwarf
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Black hole A dense area of space where gravity is so strong that everything is sucked into it.
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Our suns will expand out into a red giant and then collapse into a white dwarf.
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Constellations The arrangement of stars in patterns
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Galaxies A massive cluster of stars
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Types of Galaxies
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Shaped like a spinning pinwheel Chart designation: "S" to stand for spiral galaxies Spiral
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Barred Spiral Galaxy A spiral with a solid bar across the center. Chart designation: "SB" to stand for barred spirals.
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elliptical Shaped like an oval disk Chart designation: "E" to stand for elliptical galaxies.
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Irregular No definite shape Galaxies that can't be classified as either spiral or elliptical are called irregular galaxies.
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Our galaxy is the Milky Way The Milky Way is a spiral galaxy
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History of the universe The universe is said to have begun with the Big bang
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Big Bang Theory All matter blow out from a beginning point
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The universe is continuing to expand
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It is thought that the universe will collapse into nothingness
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