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Star
Characteristics
Stellar
Evolution
Star Groups
The Big Bang
Theory
Potpourri
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The color of the hottest stars
White
The relative size of the
sun
Medium
The speed of 300,000
km/s
A light-year
The apparent shift in a star’s
position when viewed from
different locations
Parallax
Stars that are always visible in the night
sky
Circumpolar stars
Places of gas and dust
where stars are born
Nebulae
Small, dense stars that form
as a result of supernovas
Neutron Stars
The graph that illustrates the
pattern of star’s surface
temperatures, against their
luminosity
Hertzsprung-Russell Diagram
Neutron stars that emit a beam of
radio waves that sweep across space
Pulsars
The percentage of helium a nebula is
commonly consisted of
28%
The type of galaxy our
galaxy is
Spiral galaxy
A quasi-stellar
radio source
Quasar
A large-scale group of stars, gas, and
dust that is bound together by gravity
A galaxy
Groups of stars that have a
spherical shape and can
contain up to 100,000 stars
Globular clusters
Giant stars that brighten and fade
in a regular pattern
Cepheid variables
The study of the origin,
structure, and future of the
universe
Cosmology
The type of matter that
makes up 23% of the
universe and does not give
off light
Dark matter
The time passed since the
event called the big bang
14 billion years
Radiation considered a
remnant of the big bang
Cosmic background radiation
Inflation began to occur this
long after the big bang
-35
10
seconds
A seemingly fixed pattern of
stars that can be viewed in the
night sky
A constellation
The type of sun Betelgeuse is
Red supergiant
According to current theories,
this object is most likely to be
found at the core of the Milky
Way Galaxy
A black hole
Something that is achieved when the
inward force of gravity is balanced by
the outward pressure from fusion
and radiation inside a star
Stellar
equilibrium
The temperature a
protostar increases to
10,000,000°celsius