88, as defined by the International Astronomical Union.
At different times of night and in different seasons of the year, I can find about 30 of them.
88 official constellations - but there are also some asterisms up there too. Asterisms are patterns of stars that aren't official constellations like, The Big Dipper, Orion's Belt, The Summer Triangle, etc.
There are an infinite number of constellations in the Universe, since any group of stars can constitute a myriad of different shapes according to the viewpoint from which the observer is looking from, and there are a near-infinite number of stars. If you mean how many classic, named constellations visible from Earth, then the answer is 88 for the English-speaking world. The Chinese, Arabs, Polynesians, Hindus, and aboriginal Australians all have their own constellations as well.
Constellations have been observed and identified by different civilizations throughout history, with some dating back thousands of years. The earliest known recorded constellations date to ancient Mesopotamia around 4000 BCE. These early constellations were used for navigation, timekeeping, and storytelling.
Constellations are groups of stars that are associated by the human tendency to identify patterns and assign labels to them. In that sense, they are as real as ethics, nations, justice, and political parties.
At different times of night and in different seasons of the year, I can find about 30 of them.
How many constellations have been formally named by the IAU and lies in which hemisphere
88 official constellations - but there are also some asterisms up there too. Asterisms are patterns of stars that aren't official constellations like, The Big Dipper, Orion's Belt, The Summer Triangle, etc.
The constellations were named to be easily identified for cultural and religious reasons. Most of the constellations were created and named during the bulk of the Mesopotamian era.
There are an infinite number of constellations in the Universe, since any group of stars can constitute a myriad of different shapes according to the viewpoint from which the observer is looking from, and there are a near-infinite number of stars. If you mean how many classic, named constellations visible from Earth, then the answer is 88 for the English-speaking world. The Chinese, Arabs, Polynesians, Hindus, and aboriginal Australians all have their own constellations as well.
There is no real answer to that, because as long as humans have been looking at the night sky, all the constellations have been seen. Initially they were not given names and identified in the way we do now, having 88 identified constellations, but they could all be seen. Pegasus was a constellation listed in Ptolemy's 48 constellations, which he did in the 1st century AD. You could use that as an answer, but it was only given a name around that time, not actually first sighted, which is your question.
92 atoms have been identified, i think(:
Constellations have been observed and identified by different civilizations throughout history, with some dating back thousands of years. The earliest known recorded constellations date to ancient Mesopotamia around 4000 BCE. These early constellations were used for navigation, timekeeping, and storytelling.
Constellations are groups of stars that are associated by the human tendency to identify patterns and assign labels to them. In that sense, they are as real as ethics, nations, justice, and political parties.
There are 88 named constellations.
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 patterns of stars that appear to form shapes or figures in the sky when viewed from Earth. They are not actually physically connected in space, but rather are a result of how stars align when seen from our perspective. Constellations have been identified and named by different cultures throughout history based on their interpretations of the patterns.