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Chapter 8 Lesson 3 Solar System
Transcript of Chapter 8 Lesson 3 Solar System
The Solar System
How do we observe objects in space?
Until January 7, 1610, Galileo looked at the sky through a telescope for the first time.
What are asteroids, comets, and meteors?
An asteroid is a rock that revolves around the sun.
How do we explore the solar system?
The moon is the only place in space that astronauts have explored.
telescope-an instrument that makes distant objects seem larger and nearer.
In 1990, the Hubble Space Telescope was placed into orbit around the Earth
What are planets?
Planets are large objects that orbit a star.
How do moons compare?
a moon is a natural object that orbits a planet.
A satellite is an object in space that circles around another object.
A comet is a mixture of frozen gases, ice, dust, and rock that moves in an elliptical orbit around the sun.
A meteor is an object from space that crosses paths with Earth and enters Earth's atmosphere.