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The Sun

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"The Sun" is the thirty-third episode in the first season of Disney's Bill Nye the Science Guy. It aired on October 22, 1994.


The Sun is huge. It's bigger than huge. It's so big that 1.3 million Earths would fit inside a hollowed-out Sun. It's really far away, too - about 150 million kilometers (93 million miles) Even at that distance the Sun affects everything on Earth. All the energy we have comes, or once came from, the Sun.

That includes energy to light a lamp, energy to kick a soccer ball, and energy in batteries that play your personal stereo. We're talking about nearly all of the energy. There's a little bit of energy that comes from nuclear reactions deep in the Earth's core. But that energy pales compared with the nuclear fusion fueling the Sun. Without the Sun, the Earth would be a big hunk of rock with nearly nothing on it.

The Sun is made of gas. It has so much gravity that it's atoms are smashed into hot gas. In the sun, atoms of gas are constantly crashing into each other. When they collide, they form new atoms and release energy. Scientists call this atom smashing "nuclear fusion," and it gives off a lot of energy. A very small portion of this energy beams straight through space to Earth, giving living things like us the power to live, grow and eat.


  • My Favorite Star - Performed by Deep Star

v - e - d
Bill Nye the Science Guy
Bill Nye the Science Guy

Season One: "Flight" | "Earth's Crust" | "Dinosaurs" | "Skin" | "Buoyancy" | "Gravity" | "Digestion" | "Phases of Matter" | "Biodiversity" | "Simple Machines" | "The Moon" | "Sound" | "Garbage" | "Structure" | "Earth's Seasons" | "Light & Color" | "Cells" | "Electrical Current" | "Outer Space" | "Eyeball"
Season Two: "Magnetism" | "Wind" | "Blood and Circulation" | "Chemical Reactions" | "Static Electricity" | "Food Web" | "Light Optics" | "Bones and Muscles" | "Oceanography" | "Heat" | "Insects" | "Balance" | "The Sun" | "Brain" | "Forests" | "Communication" | "Momentum" | "Reptiles" | "Atmosphere" | "Respiration"
Season Three: "The Planets" | "Pressure" | "Plants" | "Rocks and Soil" | "Energy" | "Evolution" | "Water Cycle" | "Friction" | "Germs" | "Climates" | "Waves" | "Ocean Life" | "Mammals" | "Spinning Things" | "Fish" | "Human Transportation" | "Wetlands" | "Birds" | "Populations" | "Animal Locomotion"
Season Four: "Rivers and Streams" | "Nutrition" | "Marine Mammals" | "Earthquakes" | "NTV Top 11 Video Countdown" | "Spiders" | "Pollution Solutions" | "Probability" | "Pseudoscience" | "Flowers" | "Archaeology" | "Deserts" | "Amphibians" | "Volcanoes" | "Invertebrates" | "Heart" | "Inventions" | "Computers" | "Fossils" | "Time"
Season Five: "Forensics" | "Space Exploration" | "Genes" | "Architecture" | "Farming" | "Life Cycles" | "Do-It-Yourself Science" | "Atoms" | "Ocean Exploration" | "Lakes and Ponds" | "Smell" | "Caves" | "Fluids" | "Erosion" | "Comets and Meteors" | "Storms" | "Measurement" | "Patterns" | "Science of music" | "Motion"

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