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Astonomy; ES.13a,b

TermDefinition
Big Bang Theory is most widely accepted theory for how universe formed. Doppler Shift toward the red end of the spectrum is evidence that the universe is expanding. Solar Nebular theory is most widely accepted theory on how solar system and stars form.
Solar nubia Theory widely accepted theory on how solar system and stars form.
Solar Nubia huge, vast clouds of ice, gas and dust.
The Hertzsprung Russell (H-R) diagram shows the relationship between absolute magnitude (brightness) in relation to their surface temperatures.
Galaxies collections of billions of stars. The basic types are spiral, elliptical (football shaped) and irregular.
Stars 2. All stars start as solar nebula that collapses. Stars form by condensation, gravitational compression of this nebula. Stars have a finite lifespan and evolve over time.
Light-Year the distance light travels in one year. It is the most common unit if measurement used in astronomy.
Singularity , the remnant will collapse in on itself. The star eventually collapses to the point of zero volume and infinite density, creating singularity
Super Nova A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
Black holes the end of the life cycle of some supergiant stars. If a star that massive or larger undergoes a super nova explosion, it may leave behind a fairly massive burned-out stellar remnant.
Created by: hcps-colemajb2
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