Astronomy chapters one and 2
Terms
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- Astronomy
- he study of heavenly bodies, things outside of the earth
- Astrology
- a system of divination based on the premise that there is a relationship between astronomical phenomena and events in the human world.
- Planet
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A heavenly body that revolves around the sun or a star
Greek - wanderer
- Comet
- an icy small Solar System body that, when it passes close to the Sun, heats up and begins to outgas, displaying a visible atmosphere (coma), and sometimes also a tail.
- moon
- any satellite of a planet
- Star
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Any heavenly body seen as a small fixed point of light
A self-luminous sphere of gas
- Solar System
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A star and all of the heavenly bodies rotating around it
- Galaxy
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A large assemblage of stars, gas, and dust bound together by their mutual gravitational attraction
- Universe
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All space along with all the matter and radiation in space.
- Supernova
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A stellar outburst during which a star suddenly increases its brightness roughly a million fold
- Black Hole
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An object whose gravity is so strong that the escape velocity from it exceeds the speed of light
- Quasar
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A star like object with a very large red shift
- Pulsar
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A pulsating source associated with a rapidly rotating neutron star with an off axis magnetic field
- Nebula
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A cloud of interstellar gas or dust
- Black holes are found..
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Commonly at the center of galaxies
- Speed of light measures....
- distance
- Star in Hercules
- Kornephoros
- Star in Auriga
- Capella
- Star in Pegasus
- markab
- Gemini stars
- Pollux, Castor
- Star in Taures
- Aldebaron
- Orion is hunting at
- Taures
- Star in Hydra
- Alphard