galaxies
milky ways type of galaxy
what is a spiral galaxy
A constellation
what is a group of stars called
the location on the H-R diagram with the majority stars are lying
What is the Mainsequence
nebula
What is the first stage of a star
the part of the sun above the photospere
What is the chromospere
a measure of light from a star that is received from earth
what is apparent magnitude
the amount of light a star gives off
what is absolute magnitude
blue
what is the hottest color of a star
A late stage in life of a main sequence star when hydrogen in the core is used up, the core contracts and temperatures increase causing the outer layer to expand and cool
What is a giant
a very dense region of the sun in which the atoms are so closely packed that light can take millions of years to pass through
hat is a radiative zone
it is made of a large group of stars gas and dust that is being held together by gravity
what is a galaxy
about 12 to 15 billion years ago the universe began with a huge fiery explosion
what is the big bang theory
red
what is the coolest color of star
late stage in life of a main sequence star in which it's core uses up all of it's helium and it's outer layers escape into space leaving a hot dense core
what is a white dwarf
a region of the sun where gases circulate in convection currents,bringing the suns energy to the surface
What is a convective zone
a galaxy with no regular shape
what is a irregular galaxy
an erruption of gas from the sun's surface that occurs when the loops in a sunspot regions suddenly connect
what is a solar flare
10-1
what is the luminosity of a white dwarf
late stage in life of a massive star in which the core heats up,heavy elements form by fusion and the star expands,can explode to form a supernova
what is a supergiant
middle of the sun where nuclear fusion occurs
what is the core
a galaxy shaped like a flattened ball, containing only old stars
what is a elliptical galaxy
coronal gas that is thrown into space from the sun
what is a corona mass ejection
white
what is the color of a white dwarf
collapsed core of a supernova that can shrink to 20 kilometers in diameter and contains only neutrons in it's dense core
What is a nuetron star
a loop of gas that protrudes from the sun's surface, linking parts of a sunspot region
what is a prominence