They were all found at different times, there is no exact date
There are 88 constellations to be known by scientists.
there are 88 constellations known by scientists
William Herschell for example
It is an easy way of identifying groups of stars and labelling and naming stars within constellations. Many constellations are long established. So they are also commonly known by people, making it easier for people to understand what is being talked about, be they scientists or ordinary people who can identify constellations and stars.
constellations aren't particularly helpful to scientists. they were helpful to people in ancient times for navigation and the answers to the unknown
In Scorpius.
Constellations do not really exist; they are perceived patterns in the stars. Most of the classical constellations were named by the Romans.
Andromeda and pegasus
All of them
There are 88 recognized constellations in the night sky. Some have been discovered but not recognized. And their still some to discover that may be recognized.
constellations are not "found" rather created, as they have always been there and we just "connect the dots" to form shapes in how we see them. Scorpius was one of the original 48 constellations listed by Ptolmey circa 165 BC
zodiac