BJU Earth science chapter 24

was it fun

this guy was the first person to create a system for assigning stellar magnitude

another name for the big dipper is

this guy developed a way to find stars in the sky using something like an address

when the stars motion is in the line of sight

solar mass is the mass equal to our solar system

this helped astrologers figure out that the universe is bigger than we can imagine

when the spectra of a star or galaxy seems to shift toward the red end of the visible spectrum it is called

CMBR stands for

this is a explosion that causes a brilliant flash of light that leave behind a white dwarf

if the stars do revolve around each other they are called ___________________

this is when stars move toward or away from the earth along the line of sight

A quasar is a thing astronomers can' explain

this is a type of star that are not true star but just hot left matter from a dead star

another name for the big dipper is

dark matter is what black holes are made from

this is the Hertzsprung-Russell diagram or (H-R)

this is a temporary bright flash most likely leading to the forming of a new star

when a star is about the size of the sun begins to run out of hydrogen it starts using helium and becomes a big red

these were the first variable stars to be observed

if it is a group of _____ s held together by ______ it is a ______ cluster

this is the actual brightness of a star

cosmology is the general study of the universe and its origins

a protostar is a dense condensed nebular black hole that precedes from a white dwarf

Johan Dreyer was a Danish astronomer that published his first New general catalogue

Charles Messier was a German astronomer that researched stars

Astronomers classify stars based on a combo of luminosity,temp,color,size,composition,and luster

a nebula is a cloud of dust or gas that can be seen against a background of stars

A light year is the distance that light travels in a year

any recognizable pattern of stars

A parallax is the change in position of an object in space as viewed from the poles

a distinct combination of stars

A stars brightness compared to other stars as viewed from the earth

If a white dwarfs mass is 1 1/2 solar masses it will collapse into a city sized star the star is called a

It is an unimaginably dense object

this is another word for the birth of a star the aging of the star to the death of the star aka the life cycle