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A telescope design that uses a lens and no mirrors is a refractor.

Photography with film is still the preferred way of capturing fine detail in the faintest, most distant galaxies.

The “guest star” observed by the Chinese in 1054 is now known to have been a __________.

The three laws of planetary motion by ________________ allowed us to predict planetary motion.

The ability of a telescope to separate two closely spaced stars is called ______ .

An advantage a reflector has over a refractor is the elimination of ________ .

I completed this 3 question quiz. 

18.  Tell the primary action of this muscle on the brachium Abduct     Adduct      Circumduct        Depress   Dorsiflex     Elevate     Evert     Extend    Flex      Hyperextend      Invert  Plantarflex     Pronate    Protract    Retract      Rotate    Supinate

According to Copernicus, retrograde motion occurs at opposition for the outer planets.

Galileo is credited with designing the first reflector telescope.