Isaac Newton was the first scientist to use a telescope for astronomical discoveries.

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While Isaac Newton is known for his contributions to physics and mathematics, he was not the first scientist to use a telescope for astronomical discoveries. Galileo Galilei is often credited as the first person to use a telescope for astronomical observations in the early 1600s. Later astronomers like Johannes Kepler and Christiaan Huygens also made important discoveries with telescopes.

Isaac Newton Was the First Scientist to Use a Telescope