COMPONENTS OF THE UNIVERSE Crossword

the measure of intrinsic brightness of a celestial object.
__________________ is a number that is a measure of its brightness as seen by an observer on Earth.
What is the name of a place in space where gravity pulls so much that even light can not get out.
is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
all space and the matter space contains
a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
A galaxy with a bright center and very little dust or gas
A galaxy with bulge in the center and very distinct long arms winding around the center
A galaxy that does not fit into any category; a galaxy with very little symmetry
The death of a large star by explosion
is a unit of length used informally to express astronomical distances.
_______________is a very young star that is still gathering mass from its parent (molecular cloud)
the total amount of energy emitted by a star, galaxy, or other project per astronomical it time.
a theoretical stellar remnant which has cooled sufficiently that it no longer emits significant heat or light.
group of stars that form a pattern
the band of colors formed when light passes through a prism
force of attraction between objects
outermost layer of the sun's atmosphere
middle layer of the sun's atmosphere
innermost layer of the sun's atmosphere