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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.

Stars do not twinkle; the instability of the atmosphere causes this effect.

According to Newton’s laws, the planets orbit the Sun due to __________.

Among Galileo’s discoveries with his telescope were sunspots.

According to Newton’s second law, if you double the force acting on a body, the acceleration will double.