STARS

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STARS

• Some information to make you brighter about your
  night sky.

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LIGHT YEARS

• The distance light travels in one year, or 9
  trillion kilometers. Scientists use light years
  as units of measurement.

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A
B
PARALLAX is the shift of an objects position when
viewed from two locations.
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ALPHA CENTAURI

• Is the star closest to the earth (excluding the
  sun) at 4.3 light years away.

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CONSTELLATIONS

• Are star patterns.

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MAGNITUDE

• Is the brightness of a star.
• The brighter the star, the smaller the magnitude
  number. 1 is the brightest.
• Temperature, Size, and Distance affect magnitude.

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ABSOLUTE MAGNITUDE

• Is the brightness you would see if all the stars
  were the same distance from the earth.

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STAR TERMS

• VARIABLE STARS change in brightness over days.
• CEPHEID VARIABLE one bright cycle in a constant
  period.
• NOVA A star that suddenly brightens

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STAR COLORS are related to age and temperature.
RED Older, Cool
YELLOW Average, Hot
BLUE/WHITE Young, VERY Hot
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SPACE DIRECTIONS

• COMPASS DIRECTIONS
• HORIZON Line between the earth and sky
• ZENITH Point directly above you.

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SPECTROSCOPES

• Are instruments which break light into colors of
  the spectrum. Each element gives off certain
  wavelengths allowing scientists to determine
  composition of a star.