Stars
The brightness of a star is called_____.
magnitude
The measurement of a star's apparent movement over time is known as____________.
parallax
A cloud of dust, gases and debris is called a _.
nebula
Telescopes that bend light to make objects seem larger are ____________ telescopes.
Refracting
Stars are glowing balls of gas that produce light.
True
_______________ are the largest and brightest stars.
Supergiants
Smaller stars, like our sun are ________.
dwarfs
When a massive supergiant star collapses and disappears from space, scientists call what is left a ___________ ____________.
black hole
Made of irregularly shaped pieces of rock, metal and dust.
asteroid
Red stars are the hottest stars.
False
When an existing star flares up and becomes brighter than normal, it is called an _________.
nova
A group of stars that form a pattern in the sky is called a _____________.
constellation
This star group contains only two stars,
binary system
The scientific study of stars.
Astronomy
Radio telescopes break starlight into its colors.
False
Stars that regularly or repeatedly change in magnitude are called _______.
variable stars
A ______________ is a large of stars held together by gravity .
star cluster
A huge star system that covers many light years of space.
galaxy
The true brightness of a star.
absolute magnitude
The sun is the closest star to the Earth.
True
A neutron star that spins rapidly on its axis is called an ___________.
pulsar
Two or 3 stars held together by gravity.
Multiple star group
A chunk of frozen gases, water and dust that orbit the sun.
comet
How bright a star appears to us.
apparent magnitude
The Mars Bar is the name of the galaxy in which we live.
False.