Collects and amplifies radio waves
late stage of star life that occurs when hydrogen fuel is depleted
cluster of about 50 galaxies including the Milky Way
Big Bang theory
all matter and energy compressed into single point that is always expanding
uses convex lens to collect light
energy that might be caused by accelerated expansion of universe
star pattern that appears to form images
type of matter that cannot be seen and only detected by gravitational effects
visible surface of the sun
Device that uses prisms or diffraction to separate light into its component wavelengths
microwave background radiation
radiation that provides evidence for an original hot expanding universe
section of H-R diagram that is plotted from upper left to lower right
study of how universe began
large group of stars, dust, and gas held together by gravity
uses a mirror to collect light
Spiral galaxy that 100,000 light years in diameter and has 2-400 billion stars including the sun
phenomena that the galaxy shifts to red of spectrum due to motion away from Earth
Giant star that has lost its outer layers leaving behind a hot, dense core
cool darker areas of sun's outer layer
Distance light travels in one year
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