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ESPS Vocab-Raul A.

To help with finals

TermDefinition
Astronomy Astronomy is a branch of science that deals with space and space related things
Big Bang Theory The big bang theory is a theory that states that a grand explosion created the universe
Red Shift When light shifts towards the right/red side
Blue Shift When light shifts towards the left/blue side
Frequency The amount of times a thing happens within a given time
Wavelength The distance between certain wave heights
Absolute Brightness (Magnitude) How bright a star would be is it was a certain distance away from the earth
Apparent Brightness (Magnitude) A measure of brightness
Cosmic Microwave Background (CMB) electromagnetic radiation left over from the big bang
Universe everything considered as a whole
Galaxy A system of various stars
Electromagnetic spectrum range of wavelengths over electromagnetic radiation
AU - Astronomical Unit A unit of measurement
Light Year a distance equal to how far light can travel in a year
Cosmology The study of the creation of the universe
Solar System A collection of around 8 planets with moon circling a sun
Star A fixed point of light that is visible during the night
Stellar Spectrum A way to classify stars by their characteristics
Planet A celestial body that orbits a star
Solar Nebula Description of the formation of our solar system from a nebula
Gas Giant A large planet with low density that has a high amount of hydrogen and helium
Nuclear Fusion A nuclear reaction when two smaller atoms are fused to make a larger one
Main sequence A common series of star types
HR Diagram A graph that shows a stars absolute magnitude to its surface temperature
Nebular a cloud in space that is made of gas and dust that is visible on earth
Red Giant A large star with a high luminosity but a low surface temperature
White Dwarf A small star with a high density that rivals the size of a planet
Nova A star that has a burst in brightness that later returns to normal in a few months
Neutron star A celestial object with a small radius, high density and is formed of mostly compacted neutrons
Pulsar A celestial body that is suspected to be a rotating neutron star
Black hole A place in space that has such a high gravitational field that nothing can escape
Convective zone The place in between the surface and the core
Radiative zone A region inside of the stars interior
Photosphere The layer of the star that produces heat and light
Chromosphere The layer above the photosphere
Corona The suns atmosphere
Sunspot A dark spot in the sun that is caused by the suns electromagnetic field
Prominence Standing out
Solar Flare A flash of brightness that the sun produces
Coronal mass ejection A release of plasma from the magnetic way
Kepler's law Three laws made by Johannes Kepler made to show how the planets move around the sun
Eccentricity Moving out of orbit cycle
Elliptical orbit The orbit planets have over the sun
Formula of Eccentricity the radius of a linear eccentricity
Created by: Raul_Aquino