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Space Exploration

TermDefinition
Terrestrial first four planets: Mercury, Venus, Earth, Mars
Jovian last four planets, gas giants: Jupiter, Saturn, Uranus, Neptune
Comets icy, rocky bodies with a vapor trail, follow elliptical path
Asteroids rocky bodies often found between Mars and Jupiter, follow elliptical path
meteoroid iron or rocky bodies with no determined path
meteor meteoroid that enters Earth's atmosphere, gives off light and often burns up
meteorite meteor that survives and crashes to Earth
3 main mass parts of spacecraft 3% machinery, 6% payload, 91% fuel
GPS global positioning system
Reflecting telescope uses two mirrors to gather and magnify light
Refracting telescope uses two lenses to gather and magnify light
Electromagnetic spectrum all of the energy released by burning stars
Radio telescopes very large, uses computers to gather and decipher info from space, uses interferometry
The Very Large Array series of radio telescopes in Mercedes symbol New Mexico. Arms are 61km in length
space probes unmanned spacecraft sent with the intention of never coming back to earth
triangulation looking at an object in the distance from 2 locations far apart (baseline). Angle of where the object is can calculate the distance from Earth.
Parallax measurement of the apparent shift of location of an object from 2 different perspectives
Spectroscope determines composition of stars
Doppler effect apparent change in frequency in sound and light waves as observer and wave source move towards/away from each other
Dark bands in spectrum different stars' elements have dark bands in distinct sequences and thickness in their spectra (elements absorb light differently)
Blue shift dark bands shift to blue end of spectrum when a star is approaching earth, wavelengths are compressed
Red shift dark bands shift to red end of spectrum when a star is moving away from earth, wavelengths are spread out
Created by: brie_cheese