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24 Cards in this Set
- Front
- Back
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Whyput telescopes in space |
Lightat certain wavelengths cannot penetrate the earth's atmosphere |
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Pioneer program |
Missionsdesigned to achieve escape velocity 1958-1960 |
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Mariner program |
Nasaand jet propulsion lab missions to explore mercury Venus and mars 1962-1973 |
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Gravityassist maneuver or gravitational slingshot |
Usingthe gravitational pull of a planet to boost the velocity of a spacecraft |
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Voyager program |
1977 tour of the solar system |
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Heliopause |
Pointat which pressure from solar wind equals the pressure of the milky way'sinterstellar medium |
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Heliosphere |
Bubblearound solar system blown by solar wind |
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Galileo mission |
1989to study Jupiter |
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Ocean tides |
Watercloser to the moon feels stronger gravitational pull |
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Rochelimit |
materials cant clump together because tidalforces are too strong |
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Theoort cloud |
Areaaround Kuiper beltNotvery well understood |
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Comets |
Nucleuscontains water methane ammonia carbon dioxide and dust particles |
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comet head |
Composedof gas and dust evaporating from the nucleus |
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comet tail |
Canhave multiple Notvery dense Materialpushed away from the head by solar wind particles Iontail is fast moving and points away from the sun Dusttail moves slowly and has a curve shape |
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Typesof asteroids |
c-typecarbonaceous s-typesiliceous (stony) m-typemetallic |
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Meteorites |
Asmall piece of a comet or asteroid |
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Meteor |
ameteoroid burning up as it enters the earth's atmosphere |
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Meteorite |
Ameteoroid that survives and impacts the earth's surface |
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Solarprominences |
Hugeflows of gas at 5000 to 10000 kelvin |
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Coronalmass ejections |
Hugeflows of hot gas blown outward at speeds up to 1500km/sec |
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Vanallen belts |
Arisedue to charge particles being trapped by the earth's magnetic field |
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Auroraborealis and aurora Australis |
Causedby interaction of electrons in solar wind with atoms in earth's atmosphereLocationis near earth's magnetic fields |
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Jetpropulsion |
Jetengines operate by pushing a stream of usually air or water in the oppositedirection |
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Nuclearpulse propulsion |
Propelspacecraft using nuclear explosion for thrust |
