1. Home
  2. / Robert Hooke
  3. / What did Robert Hooke observe using the earliest Gregorian telescope he built in 1673?

What did Robert Hooke observe using the earliest Gregorian telescope he built in 1673?

  • The rotations of Mars and Jupiter

  • The surface of the Moon

  • The rings of Saturn

  • The Andromeda Galaxy

Answer

In 1673, Robert Hooke built the earliest Gregorian telescope and used it to observe the rotations of the planets Mars and Jupiter. This was a significant contribution to the field of astronomy.
The Brilliant Mind of Robert Hooke: Unveiling the Legacy of an English Polymath

The Brilliant Mind of Robert Hooke: Unveiling the Legacy of an English Polymath

Take the Robert Hooke Quiz
Subscribe newsletter

Subscribe Now!

Learn something
new everyday

Playing quizzes is free! We send 1 quiz every week to your inbox