stellar scintillation
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What are constellations?
Groups of stars that make an apparent pattern in the sky.
What is parallax?
The apparent shift in position of an object caused by a change in the observer's position
Why do stars twinkle?
The motion of Earth's atmosphere creates the appearance of twinkling.
what is absolute magnitude
how bright a star actually is
What is apparent magnitude?
how bright a star appears from earth
what are 3 methods of measuring distance in space
in our solar system we need a smaller unit of measure, nearby stars in the local group can be measured by parallax
what is rise and set
stars and constellations that are on the hemisphere you are on and is not on the axis that appears to rise and set
what is light year
the distance light travels in one year
