whitedwarf		The apparent change in positions of an object when you look at it from different places.
constellation		Most of the known stars fall along this in the H-R diagram.
lightyear		Our sun is one.
nebula		These stars are only about 20km in diameter.
brightness		Betelgeuse is a ___ star.
pulsar		An object in space with gravity so intense even light cannot escape.
neutron		The ___ of a star depends on its temperature.
mainsequence		A large cloud of gas and dust in the universe which gives birth to stars.
milkyway		The brilliant explosion of a dying supergiant star.
star		Device that breaks up light from elements into colors and produces an image like a rainbow.
orion		Imaginary pattern of stars.
spectrograph		An extremely large, but fairly cool star.
neutronstar		"The Hunter"
scientificnotation		A star in its earliest stage of life.
supernova		Uses powers of ten to write very large or very small numbers in a shorter form.
hertzsprungrussell		____ brightness is how bright a star is measured from a standard distance away.
parallax		The small, dense remains of a high-mass star after a supernova.
absolute		Our galaxy.
betelgeuse		___ brightness is how bright a star looks from Earth.
quasar		A huge group of single stars, star systems, star clusters, dust and gas bound together by gravity.
supergiant		The distance light travels in one year.
blackhole		A rapidly spinning neutron star that produces radio waves.
apparent		An enormously bright, distant galaxy with a giant black hole at its center.
protostar		What is left behind when a low-mass or medium-mass star dies.
galaxy		This diagram shows the relationships between color, temperature, and absolute brightness of stars.