Ch 3 Stars

Vast group of billions of stars held together by gravity

• galaxy

• nebula

• black dwarf

• light-year

The sum of everything that exists is the ​ (a)  

• universe
• galaxy
• supernova
• protostar

Very large old reddish star that has expanded as its fuel has begun to run out

• light-year

• neutron star

• red giant

• white dwarf

Dark cool body that is in the final stage of the life cycle of a low mass star

• Milky Way Galaxy

• absolute magnitude

• white dwarf

• black dwarf

A ​ (a)   is a concentration of matter in space that is the beginning of a star.

• protostar
• nebula
• neutron star
• white dwarf

Measure of a star's brightness based on the true amount of light the star gives off

• absolute magnitude

• apparent magnitude

The distance that light travels in one year

• galaxy

• light-year

• absolute magnitude

• supernova

An exploding star

• supernova

• galaxy

• protostar

• red giant

Measure of a star's brightness as seen from Earth

• apparent magnitude

• absolute magnitude

Small dying star that gives off very little light

• white dwarf

• black dwarf

• protostar

• neutron star