Question

2. Who were those Astronomers who made contributions to the study of heavenly
bodies from 1400 to the time of Galileo Galilei?
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Answer 1

Answer:

ɪɴ ᴀɴᴄɪᴇɴᴛ ɢʀᴇᴇᴄᴇ, ᴀsᴛʀᴏɴᴏᴍᴇʀ ᴀɴᴅ ᴍᴀᴛʜᴇᴍᴀᴛɪᴄɪᴀɴ ᴄʟᴀᴜᴅɪᴜs ᴘᴛᴏʟᴇᴍʏ (ᴀ.ᴅ. 90-168) sᴇᴛ ᴜᴘ ᴀ ᴍᴏᴅᴇʟ ᴏғ ᴛʜᴇ sᴏʟᴀʀ sʏsᴛᴇᴍ ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ sᴜɴ, sᴛᴀʀs, ᴀɴᴅ ᴏᴛʜᴇʀ ᴘʟᴀɴᴇᴛs ʀᴇᴠᴏʟᴠᴇᴅ ᴀʀᴏᴜɴᴅ ᴇᴀʀᴛʜ.

Answer 2

Claudius Ptolemy was the astronomer who made a contribution to the study of heavenly bodies from 1400 to the time of Galileo Galilei.

Claudius Ptolemy:

1. In ancient times, Ptolemy was the most influential astronomer, mathematician and geographer.
2. He discovered and encouraged the theory of geocentrism. This concept stated that Earth was the centre of the universe, and all the other planets and bodies revolved around it.

Contributions of Ptolemy:

1. Ptolemy's famous work was called the Almagest.
2. Although his geocentric theory was incorrect, it provided the foundation for research and further studies related to heavenly bodies.
3. The writings of Claudius Ptolemy included names and outlines of 48 constellations.

The geocentric theory introduced by Ptolemy prevailed as the only theory until Galileo Galilei made observations of the moon, Jupiter, Venus and Sun.