random questions from sections
what is the main that affects the evolution of a star?
mass
list all the colors from hottest to coolest
blue,yellow,red
how long a star lives depends on its
mass
what is a binary star
a star system with two stars
a refracting telescope uses to gather and focus light
convex
a is the distance that light travels in one year
light year
a spectograph is used to determine the of the stars
Chemical compostion
a nebula is a large cloud of gas and dust into a large volume .
spread out
what is an eclipsing binary
A binary system in which in one star predically blocks the light from the other
a telescope uses curved mirrors to collect and focus light
reflecting
are the remains of high mass star.
Newton stars
what size is our sun?
medium size
define protostar
a contraction cloud of gas and dust with enough mass to form a star lifetime of stars
what is a open clusters
a large,round,densly,packed grouping of older stars
a is a building that contains one or more telescopes.It is usually located on mountain tops or in space
observatory
what is a black hole
an object with gravity so strong that nothing can escape
the most common chemical element in most stars is
hydrogen
define white-dwarf
blue-white core of star that is left behind and cools
what is a gobular clusters
loose,disorganized
define electromagnetic radiation
Energy that travels through space in the form of waver.
what is the absolute brightness and apparent brightness
absolute brightness is when you can see brightness from earth, but apparent brightness is in a light year
define super-nova
Explosion of a super giant star after it runs out of fuel
the electromagnectic spectrum includes the entire range of