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Distances in Space Vocabulary

Distances in Space Vocabulary. Light Year (LY). The distance a ray of light travels in one year The speed of the ray of light would be equal to: 7.2 AU per hour or 300,000 km/sec or 186,000 miles/sec. Astronomical Unit (AU).

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Distances in Space Vocabulary

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  1. Distances in Space Vocabulary

  2. Light Year (LY). • The distance a ray of light travels in one year • The speed of the ray of light would be equal to: • 7.2 AU per hour or • 300,000 km/sec or • 186,000 miles/sec.

  3. AstronomicalUnit (AU) • The average distance between the sun and the earth.

  4. 1 AU is equal to 93 million miles or 150 million kilometers • An AU is a standard of distance used within the solar system

  5. Example: Jupiter 5.2 AU • Light travels 1 AU in eight minutes. • Sound travels 1 AU in 14 years

  6. A Light Year is a standard unit of measurement for interstellar distances beyond the solar system. • Milky Way Galaxy is approx. 100,000 LY across in distance • Nearest star to the sun is ProximaCentauri approx 4.2 LY

  7. Parsec • One parsec is equal to 3.26 light years

  8. A parsec is a unit of measurement used for distances between very far structures in the universe. • Example: distances between galaxies

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