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The Solar System
Transcript of The Solar System
Made of mostly Helium and Hydrogen
Is 99.8% of the Solar System's Mass
Middle Aged (about 4.5 billion years old)
150 million km away from Earth Our size compared to the Sun (the Sun is a million times bigger) Has used up 30-55% of its energy Chunks of rock/ice that are not part of a planet COMETS ASTEROIDS METEORITES (frozen gases, dust, and rock in the nucleus) "cosmic snowballs" The closer it gets to the sun, it heats & melts the gases and develops an atmosphere, creating its "tail" can be the size of a small town Chunks of debris & rock When it falls through the atmosphere of Earth it is called a shooting star, when it hits the ground it is then a meteorite 1,000-10,000 hit Earth each day airless worlds that orbit the Sun mostly gathered around the Asteroid belt Double asteroids (2 that orbit each other) 150+ asteroids have a moon Stars has rings Bright sphere containing plasma held together by gravity More than a trillion in the universe (turning hydrogen into helium in its core) Stars shine because of thermonuclear fusion Red dwarfs take up about 85% in the S.S. x10 of the Sun: 100 Million Years Our Sun's Mass: 13 billion years 1/10 of our Sun: 100 billion years or longer located between the orbits of Mars and Jupiter some minor/dwarf planets mass has been greatly reduced over time Began as very hot, small & dense with absolutely nothing (no atoms, structure...) Suddenly started to expand quickly (therefore gave the name big bang) resulting in the formation of atoms which then lead to the creation of stars, and galaxies. Satellites There are many satellites that currently orbit earth. Active ones track the weather, giving us communication, and take photos. Man made machines sent to space to orbit planets to collect information But, there are millions of objects (debris) orbiting right now (AKA Space Junk)! Inner Planets: Smaller & closest to Sun Rocky Most have atmospheres Few or no moons No rings Outer Planets None have solid surfaces All are Gas Giants Planets beyond asteroid belt Uranus & Neptune are Ice Giants (Jupiter, Saturn, Uranus, Neptune) (Mercury, Venus, Earth, Mars) Planets Before Asteroid Belt (Not the show) Ringed