Galileo was the first scientist to do which of the following?
Select one of the options below as your answer:

A.
estimate the speed of light
B.
propose the heliocentric theory
C.
discover radioactivity
D.
define and measure speed
E.
invent the reflecting telescope

Question

Galileo was the first scientist to do which of the following?
Select one of the options below as your answer:

    A.
    estimate the speed of light
    B.
    propose the heliocentric theory
    C.
    discover radioactivity
    D.
    define and measure speed
    E.
    invent the reflecting telescope

isaiah.feynman · Answer

E.

anonymous · Answer

Isn't Newton credited with the reflecting telescope ?
I think Galileo developed kinematics, so answer D, defining and measuring speed.