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An imaginary pattern of stars in the sky.
Constellation
100
A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
What is spiral galaxy
100
A star system with 2 stars
What is binary star
100
All of space and everything in it.
What is universe
100
The small dense remains of a high mass star after a supernova
What is neutron star
200
The apparent change in position of an object when seen from different places
What is parallax
200
A contracting cloud of gas and dust with enough mass to form a star
What is protostar
200
An instrument that separates light into colors and makes an image of the resulting spectrum
What is spectograph
200
The blue white hot core of a star that is left behind after it's outer layers have expanded and drifted into space
What is white dwarf
300
A rapidly spinning neutron star that produces radio waves
What is pulsar
300
A huge group of single stars, star systems , star clusters, dust and gas bound together by gravity
What is galaxy
300
An enormously bright distant galaxy with a giant black hole at its center
What is quasar
300
The distance that light travels in one year about 9.6 million kilometers
What is light year
300
A binary star system in which one star periodically blocks the light from another
What is eclipsing binary
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