Astronomy Dsst Study Guide Rated A+

the time the moon rises or sets {Ans: is based on its phases}hydrostatic equilibrium {Ans: balance between weights of various layers and pressures that support them}absorption lines {Ans: - analyze chemical composition of celestial bodies -when a certain shade of color on the strip is black, indicating that a particular frequency of light has been blocked. - lines are used to tell more about the makeup by what wavelengths of light are blocked, - BLOCKED}blue shift {Ans: toward}type 1a stars {Ans: more like standardizable candles because they don't all have the same light/brightness but difference is correlated with how quickly light curves defines and can be made into standard candles by correcting for this effect}cepheid variables {Ans: stars that belong to one of two classes of yellow giant pulsating stars}