The zodiac has roots that predate the Christian era. The ancient Greeks had a lot of stuff on paper, and they got a lot of their stuff from the Babylonians, who had a zodiac thousands of years B.C. Our friends at Wikipedia have posted a most informative article on the zodiac, and it's well worth the read. (A link is provided.) Knowledge there is free, by the way. Help yourself.
Babylonians made the zodiac sighs.
a greek astronomer hiarachus
The astronomer whose treatise was named 'Panchasiddhantika' was Varahamihira, an ancient Indian mathematician and astronomer who made significant contributions to the field of astronomy.
Yes, they did. They used the standard zodiac complied by the astronomer/astrologer Ptolemy. Astrologers and their predictions were frequently consulted by the Romans, even by Octavian (Augustus) and his friend Agrippa when they were in Greece. According to Stephen Dando-Colilns, the birth sign of each legion was incorporated into their records.
Is it babylonians .
Aristotle, though an argument can be made for plato.
Tycho Brahe, the famous astronomer.
An astronomer
Yes he was. He was also a mathematition, logician, and an inventor.
Ole Roemer was.
I am an astronomer.
The constellation Cancer has been known since ancient times and was first catalogued by the Greek astronomer Ptolemy in the 2nd century AD. It is one of the 12 constellations of the zodiac, representing a crab.