Telescopes are great tools for observing the heavens, or even surrounding landscapes if you have the right vantage point. You ...

Newton's reflecting telescope consisted of a single curved ... most major observatories are Newtonian reflectors. During the nascent years of the telescope, most devices were relatively small ...

Newtonian telescopes use a reflecting mirror to avoid the colour distortion and rainbow effect afflicting telescopes that use lenses. Finally, Newton discovered and defined calculus, the ...