quasar
a mysterious, bright, starlike object in the galaxy core
red supergiant
Betelgeuse… a large star of high luminosity
sunspots
dark spots on the sun where gas is cooler
nebulae
clouds of dust and gas where stars are born
star
a hot, self-luminous sphere of gas
pulsar
a neutron star that rotates rapidly and gives out a beam of radiation picked up as a pulse
neutron star
the core of a star left after a supernova explosion
galaxy
billions of stars held together by gravitational attraction
constellation
a specific pattern of stars
nova
a star suddenly exploding with increasing brightness
photosphere
the surface of the sun which emits the radiation we can see
binary star
2 stars orbiting a common center of gravity
black dwarf
a white dwarf which has stopped radiating energy
Sirius A
the brightest star in the sky
supernova
a star explosion which increases the star’s luminosity to 1000 times that of a nova
white dwarf
a star that has collapsed after using its fuel
variable star
a star whose brightness changes
Andromedea
a nearby galaxy
Milky Way
our galaxy
corona
very hot gas of the sun visible only during a total eclipse of the sun
solar flames
sudden increases in brightness of the chromosphere of the sun
black hole
a collapsed star from which light cannot escape
chromosphere
bright red layer of sun surface containing hydrogen gas
