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Terms

Air,Space, and Solar

Definition	Word	Definition	Word	Definition	Word
The magnitude a star would have if viewed from 10 parasecs, 32.6 light years	Absolute Magnitude	Chunks of rocks, metal, an dice that orbit our sun, found mostly between Mars, and Jupiter, varying in size from boulders to small moons: also called planetesimalsor minor planets	Asteroids	A space explorer	Astronaut
The study of the universe beyond Earth's atmosphere	Astronomy	The shifting, glowing lights seen over the polar regions caused when enerized particles from the sun react with the particles in the Earth's upper atmosphere : the energized particles come from solar flares	Aurora	Imaginary line about which an object spins	Axis
Weather instrument that measures atmospheric pressure	Barometer	A pair of stars that orbits about a common center of gravity, also called double stars	Binary stars	A region of highly warped - time, around a collapsed massive star, in which the gravitational field is so strong that not even light can escape	Black hole
An object made of ice, dust and gas which orbits the sun with its tail of dust pointing away from the sun	comet	A group of stars that gives the appearance of a pattern when viewed from earth; there are at least 88 named ones	constellation	A concave indention in the surface of a planet or moon caused by the impact of a meteroid	crater
The outermost layer of soil on a planet or moon	Crust	When on celestial body blocks the view of another, such as when the moon blocks our view of the sun during a solar one	eclipse	A nuclear reaction in which nuclei are split releasing enormous amounts of energy; this infusion reactions alternate on stars until all of their fuel are consumed	fission
A nuclear reaction in which nuclei join together and form a larger nucleus; fission and these reactions alternate on stars until all of their fuels are consumed	fusion	The phase of the moon when all of the lighted half of the moon is facing earth	Full moon	Jupiter's first four moons discovered by Galileo: Io, Europa, Ganymede, Callisto	Galilean satellites
The force of attraction between objects	gravity	A system of grouping galaxies according to their shape, developed by Edwin Hubble	Hubble Classification	The four planets closest to the sun - Mercury, Venus, Earth & Mars	Inner Planets
The distance light travels in a vaccuum in one year - about 6 trillion miles, the standard distance of unit used by astronomers	A light year	When the sun, earth and moon are aligned in such a way that the moon is blocked from view on earth by earth's shadow	Lunar eclipse	Natural satellites that orbit planets	moon
A streak of light seen in the sky caused by the firing atmospheric friction from entry of a meteroid through earth's atmosphere; commonly called a shooting star or fire ball	meteor	The portion of a meteor that has survived the atmospheric friction and crashed into earth's surface	meteorite	An enormous cloud of interstellar dust and gases	nebula
A small dense star that resulted from a massive star which exploded as a supernova	neutron star	A star which suddenly flares up to 100,000 times it's brilliance before fading away over a period of months or years	nova	The five planets furthest from the sun - Jupiter, Saturn, Uranus, Neptune, Pluto	Outer Planets
Large, heavenly, nonluminous body which revolves about a star	Planet	Places that house equipment that simulates the movements of teh universe	Planetariums	Rapidly-spinning neutron star which gives off regular bursts of radiation	Pulsar
Distant and luminous object probably about the size of a large star, which gives off energy equal to that of thousands of galaxies, believed to be at the core of active galaxies	Quasar	After about 10 million years, a yellow star enlarges and cools down, forming a red giant star; thus, red stars are older, larger and cooler than yellow stars	Red Giant	The movement of one body, in an elliptical path, around another	revolution
The spin of an object about its center line, the axis; celestial bodies spin on their axes	Rotation	Any small body orbiting a larger one	Satellite	When the earth, sun, and moon are aligned in such a way that the moon blocks all or most of the sun from view on part of the earth	Solar eclipse
The straem of energized particles given off by the sun	Solar wind	Instrument used for viewing the spectrum of a light source directly	Spectroscope	THe study of the spectra	Spectroscopy
Magnetic storm on the sun; it appears as a dark region on the sun because it is cooler than the surrounding area	Sunspot	THe explosion of a high-mass star	Supernova	An old, dense star that results after a red giant star consumes its fuel over a long period of time	White dwarf
THe point in the sky directly above the observer	Zenith	The middle layer of the sun's atmosphere between the phoosphere and the corona, made up of alrge cells of rising gas where fiery eruptions called spicules, flares, and prominences occur	Chromosphere	THe layer of the sun in which bubbling gases keep energy constatnly moving toward the surface; extends to within 100 miles from the surface	Convection zone
THe center of th esun, composed mostly of hydrogen and small amounts of helium and other gases, which fuels continuous fission and fusion reactions, releasin enormous amounts of energy	Core	The outermost layer of the sun's atmosphere, composed mostly of hydrogen and small amounts of helium and other gases; extends a few million miles into space	Corona	A fiery eruption in the chromosphere of the sun, can disturb radio transmission on Earth	flare
THe semitransparent inner layer of the sun's atmosphere made up of columns of rising gas called granular cells, forms the visible surface	Photosphere	Great clouds of gas, in the chromosphere of the sun, that form loops that extend for miles above the sun's surface	Prominence	THe most dense zone, located between teh core and the convection zone	Radiation Zone
A stream of energized particles that escapes from teh sun's coroana and "blows" outward into space	Solar wind	Fiery eruption in the chomosphere of the sun	Spicules	Temperature of the gases are cooler than those in the rest of the sun's surface; are thought to be magnetic storms on the sun's surface	sunspots

Created by: zachgr14

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