Astro Exam 1 Complete Questions And Answers 2025
1. Star: Large glowing ball of gas that generates heat
and light through nuclear fusion in it's core
2. Planet: Object that orbits a star
3. Moon: Objects that orbits a planet (or satellite)
4. Asteroid: small rocky object that orbits a star
5. Comet: small and icy-rich object that orbits a star
6. Solar System: The sun and the material that orbits it
7. Nebula: An interstellar cloud of gas and or dust
8. Galaxy: an island of stars and in space, all held together by
gravity and orbiting a common center
9. Cluster/Group of Galaxies: a collection of galaxies bound together by gravity
10. Universe: the sum total of all matter and energy (100 billion
galaxies in the universe)
11. If every star in the universe was a we would be 4 meters deep in sand in
California
grain of sand...
12. Speed of Light Travels at 300,000 km/s
13. Light-Year the distance light can travel in one
year 1 light year= (speed of light)
x (1 year)
14. We see object in space... In the past.
Ex) We see Orion, the constellation, as it was 1,500
years ago.
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1. Star: Large glowing ball of gas that generates heat
and light through nuclear fusion in it's core
2. Planet: Object that orbits a star
3. Moon: Objects that orbits a planet (or satellite)
4. Asteroid: small rocky object that orbits a star
5. Comet: small and icy-rich object that orbits a star
6. Solar System: The sun and the material that orbits it
7. Nebula: An interstellar cloud of gas and or dust
8. Galaxy: an island of stars and in space, all held together by
gravity and orbiting a common center
9. Cluster/Group of Galaxies: a collection of galaxies bound together by gravity
10. Universe: the sum total of all matter and energy (100 billion
galaxies in the universe)
11. If every star in the universe was a we would be 4 meters deep in sand in
California
grain of sand...
12. Speed of Light Travels at 300,000 km/s
13. Light-Year the distance light can travel in one
year 1 light year= (speed of light)
x (1 year)
14. We see object in space... In the past.
Ex) We see Orion, the constellation, as it was 1,500
years ago.
1/
4
