What instrument did Hipparchus possibly use while creating the star catalogue?
Armillary sphere
Telescope
Sextant
Caliper
Answer
An armillary sphere is a type of scientific instrument that was used in ancient Greece to measure the positions of stars and planets. It consists of a series of rings that are connected together and can be rotated to align with the sky. Hipparchus is believed to have used an armillary sphere to create his star catalogue, which is one of the earliest and most important astronomical works ever produced.
The Legacy of Hipparchus: Exploring the Cosmic Genius
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