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ESPS Allan Flores B1

ESPS Vocab

TermDefinition
Astronomy Study of everything in the Universe. Moon, stars, planets, etc.
Big Bang Theory The theory of how the universe was created. Big explosion, and universe was created. Universe started very hot, and extremely dense.
Redshift Longer wavelengths of light, which means an object is moving away from you.
Blueshift Shorter wavelengths of light, which means an object is moving closer to you.
Frequency Number of wavelengths that pass a point in a certain amount of time.
Wavelength Distance between two waves.
Absolute Brightness( Magnitude) The brightness of a star when it is a certain distance from Earth.
Apparent Brightness ( Magnitude) How bright a star looks.
Cosmic Microwave Background (CMB) Radiation left over from Big Bang Theory. Biggest piece of evidence for Big Bang Theory. Shows areas of cold, and hot temperatures. Warm temperatures are less dense, cold temperatures are more dense, and are where stars, planets,and galaxies are created.
Universe Space and everything that is in it.
Galaxy A collection of what makes space that is bound together by gravity.
Electromagnetic Spectrum Wavelengths or frequencies of electromagnetic radiation.
AU (Astronomical Unit) Average distance between the Earth and the Sun
Light Year Distance light travels in a year.
Cosmology Study of the origin of the universe.
Solar System Planets, and other objects that revolve around the Sun
Star Ball of hydrogen and helium, undergoes nuclear fusion.
Stellar Spectra Continuous black body spectrum and photo sphere. Based on absorption line.
Planet Big body in space that orbits a star. Cannot create it's own light.
Solar Nebula Cloud of gas from which the planets and starts were once formed.
Gas Giant Planet with deep and massive atmosphere.
Nuclear Fusion When two or more nuclei combine together to make a bigger nucleus.
Main Sequence Spot on the HR Diagram where most stars are.
HR Diagram Graph showing the temperature and brightness of a star. Can show where a star is in its life cycle.
Nebula Cloud of gas and dust in space.
Red Giant Red star that is late in its life cycle. Low mass star, but still a big star. That turns into a planetary nebula star.
White Dwarf Small star that is a leftover center of a bigger/older star.
Nova A star that increases in brightness tremendously, but then fades.
Neutron Star A star that has collapsed under gravity.
Pulsar Rapidly spinning neutron star that makes radio waves.
Black hole Region of space with a gravitational force so strong that even light can't escape.
Convective Zone An area of the sun where gases circle in convection currents, bringing the sun's energy to the top.
Photosphere Top of the sun; can be seen .
Chromosphere The middle layer of the sun; has many characteristics to gas.
Corona Outside layer of the sun's atmosphere.
Sunspot Dark area of the photosphere that is cooler than the areas surrounding it.
Prominence Red loop of gas that extends from the sun's surface.
Solar Flare Eruption of high energy radiation that comes from the sun's surface; this eruption is sudden, and unexpected.
Coronal Mass ejection Portion of coronal gas that is thrown into space.
Parallax The seeming change of a position of an object when you are looking at it from different locations.
Constellations Group of stars that form patterns.
Emission Spectrum A series of bright lines produced by hot gas under low pressure.
Absorption Spectrum Spectrum of electromagnetic radiation that is made from a source. You can use this to figure out what kind of elements are in the star. Absorption spectrum's have dark lines that represent the same frequency of the element that is in the star.
Radiative Zone A very dense area of the sun where the atoms are so dense, and compressed together, that it takes light millions of years to pass through.
Created by: allanflores125
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