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Astronomy

QuestionAnswer
what does Astronomy mean and what is a example The branch of science that deals with celestial objects, space, and the physical universe as a whole.
Big Bang Theory Theory of how the universe was created with a explosion
Doppler Shift A change in frequency due to the doppler effect
Cosmic Microwave Background Electromagnetic radiation as a remnant from an early stage of the universe in Big Bang
Electromagnetic Spectrum The range of wavelengths or frequencies over which electromagnetic radiation extends.
AU- Astronomical Unit Unit of length, the distance from Earth to the Sun.
Convective zone Its where hot plasma rises, cools as it nears the surface and falls to be heated and rise again.
Chromosphere A reddish gaseous layer immediately above the photosphere of the sun or another star. With the corona it makes up the star's outer atmosphere.
Prominence A large, bright, gaseous feature extending outward from the Sun's surface. in a loop shape
Coronal mass ejection A significant release of plasma and accompanying magnetic field from the solar corona.
Pulsar A highly magnetized rotating neutron star that emits a beam of electromagnetic radiation
Cosmology The study of the origin, evolution, and eventual fate of the universe
Solar Nebula hypothesis describes the formation of our solar system from a nebula cloud made from a collection of dust and gas
Parallax, the apparent displacement of an object because of a change in the observer's point of view.
Main Sequence a series of star types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars).
Absolute Brightness (magnitude) True brightness of celestial object
Apparent Brightness (magnitude), the brightness of a celestial object as it is actually measured from the earth.
Nebula Large cloud of dust in space.
Sunspot Darker spots on the suns photosphere that have reduced temperatures.
Solar Flare a sudden flash of increased brightness on the Sun
Created by: Omar Alva
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