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61 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Ptolemy |
A Greek astronomer who created a earth centric model of the universe. |
Greek |
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Copernicus |
A polish astronomer that created a Heliocentric (sun) model of the universe |
Polish |
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Tycho Brahe |
A Danish astronomer thought the sun and moon revolved around earth and the planets revolve around the sun. |
Danish |
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Johannes Kepler |
Brahe's assistant who founded the laws of planetary motion |
Assistant |
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Galileo Galilei |
First to use a telescope to observe space. |
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Isaac Newton |
He discovered gravity |
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Isaac Newton |
He discovered gravity |
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Edwin Hubble |
Discovered other galaxies beyond the Milky Way |
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Optical telescope |
The most common type of telescope |
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Optical telescope |
The most common type of telescope |
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Refracting telescope |
Use lenses to gather and focus light |
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Reflecting telescope |
Use MIRRORS to gather and focus light |
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Electromagnetic spectrum |
The range of all possible frequencies of electromagnetic radiation |
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Electromagnetic radiation |
The radiant energy released by certain electromagnetic processes(visible light is one type of this) |
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Electromagnetic radiation |
The radiant energy released by certain electromagnetic processes(visible light is one type of this) |
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Blue/red light |
Red light long wavelength Blue light shorter wavelength |
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Electromagnetic radiation |
The radiant energy released by certain electromagnetic processes(visible light is one type of this) |
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Blue/red light |
Red light long wavelength Blue light shorter wavelength |
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Non-optical telescope |
It detects radiation that can not be seen by the human eye |
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Astrolabe |
An instrument that describes the location of a star or planet |
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Zenith |
The point in the sky directly above an observer on Earth |
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Zenith |
The point in the sky directly above an observer on Earth |
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Horizons |
The line where the earth and sky appear to meet |
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Altitude |
The angle between an object in the sky and the horizon |
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Celestial sphere |
An imaginary sphere that surrounds the earth that scientists use as a reference system |
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Celestial sphere |
An imaginary sphere that surrounds the earth that scientists use as a reference system |
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Celestial equator |
An imaginary circle created by extending earth' equator into space |
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Vernal equinox |
The location of the sun on the first day of spring |
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Vernal equinox |
The location of the sun on the first day of spring |
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Right Ascension |
A measure of how Far East an object is from the vernal equinox |
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Declination |
A measure of how far north or south and object is from the celestial equator |
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Declination |
A measure of how far north or south and object is from the celestial equator |
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Light year |
A unit of length equal to the distance that light travels in one year |
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Declination |
A measure of how far north or south and object is from the celestial equator |
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Light year |
A unit of length equal to the distance that light travels in one year |
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Doppler effect |
The change in frequency of a wave for an observer moving relative to its source |
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Declination |
A measure of how far north or south and object is from the celestial equator |
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Light year |
A unit of length equal to the distance that light travels in one year |
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Doppler effect |
The change in frequency of a wave for an observer moving relative to its source |
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Astronomical unit |
The average distance from the earth to the sun |
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Outer planets/gas giants |
(Jupiter,Saturn, Uranus, and Neptune) Gas giants- planets that have deep,massive atmosphere rather than hard rocky surfaces |
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Inner planets/terrestrial plants |
Dense and rocky planets (Mercury, Venus, earth, Mars,) |
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Moons |
Mars- Phibos Jupiter-Ganyemede Saturn- Titan Uranus-Miranda Neptune-Triton |
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Nucleus |
The solid center of a comet |
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Front (Term) Oort Cloud |
Back (Definition) Comets come from this region |
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Kuiper belt |
A region outside of Neptune where comets exist |
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Asteroid belt |
A wide region between the orbit of Mars and Jupiter |
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Meteoroid |
A small rocky body that revolves around the sun |
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Meteorite |
A meteoroid that reaches earth surfaces without bursting to flames |
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Meteor |
A bright streak of light caused by a meteoroid |
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Collisions/impacts |
An impact happens when an object in space collides with another object in space |
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Torino scale |
A system that allows scientists to rate the hazard level of an object moving toward earth |
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Prograde rotation |
A planet spins counter clock wise (Earth) |
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Retrograde rotation |
A plant spins clockwise |
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Period of revolution |
The time an object takes to revolve around the sun once Mercury is 88 earth days |
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Period of rotation |
The amount of time it takes an object to rotate once Mercury takes 59 earth days |
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Satellite |
Natural or artificial bodies that revolve around larger bodies such as planets |
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Luna |
Earth's moon |
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Cratering |
The number of impact craters |
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Waxing/waning |
Waxing- when the sunlight fraction of the moon that we can see from the earth is getting larger
Waning- when the sunlight if the moon is getting smaller |
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Eclipse |
An event in which the shadow of one celestial body falls on another
Solar- when the moon comes between earth and the sun
Lunar- when the earth comes in between the sun and the moon |
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