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9 Cards in this Set

  • Front
  • Back

GALAXIES

collection of dust, gases and billions of stars

LIGHT YEARS:

the distance light travels in one year

PROXIMA CENTAURI

closest star to our solar system-


approximately 4.22 light-years away from our solar system

SPIRAL GALAXY

disk shape;with arms and bulge in center- arms rotate(spin)



MILKY WAY

our galaxy; our solar system & Sun is found on the arm

ELLIPTICAL GALAXY

flat, oval shape; contains old stars

IRREGULAR GALAXY

no shape; contains young stars- least common kind

SUN

yellow medium size star much brighter


than other stars because it is closer


to Earth

GRAVITATIONAL PULL

of the sun keeps our planets in orbit around it at the center of solar system