Constellations are patterns of stars that can be easily identified. A constellation can also refer to a region in the sky with a specific group of stars. there are 88 constellations in the sky. Examples of constellations include Leo, Pisces, Taurus, Andromeda, and Orion.
Naming a constellation:- Most constellations were named in Greek and Latin by the ancient Greeks and the Romans. Ptolemy, the great astronomer from Egypt, named 48 of the 50 constellations known during his time. The constellations were generally named after animals and mythological characters. For example, the constellation Leo was named after a lion, Pisces after two fish, and Taurus after a bull. Constellation Andromeda, Cassiopeia, Orion, and Perseus were named after heroines and heroes in Greek mythology. In the post- Copernican era, from around AD 1600 to 1800, astronomers discovered a host of new constellations. In 1928, the International Astronomical Union (IAU) took into account 38 of the newly discovered constellations along with 50 old constellations and named the 88 constellations that we know today. Most of the constellations retained their Greek and Roman names.
Ursa Major and Ursa Minor:- Ursa Major or the Great Bear is the third largest constellation. It can be seen throughout the year in the northern hemisphere. Ursa Minor or the Small Bear is an asterism that can be seen in the northern sky. Asterisms are a unique group of stars that forms an easily recognizable shape.
Constellations Hydra:- Hydra is the longest and the largest constellation in the sky. The constellation resembles a twisting snake. It is bordered by the zodiac sign of Cancer, Leo, Virgo, and Libra on the northern side.
Constellations of the Zodiac:- Every year, the Sum passes through an imaginary ring of 12 constellations. this ring of constellations is known as the Zodiac. Ptolemy named the constellations of the Zodiac in the 2nd century BC.
The 12 constellations of the Zodiac are:
1. Aquarius, the water bearer
2. Aries, the ram
3. Cancer, the crab
4. Capricorn, the twins
5. Gemini, the twins
6. Leo, the lion
7. Libra, the scales
8. Pisces, the fish
9. Sagittarius, the archer
10. Scorpio, the Scorpion
11. Virgo, the virgin.
Constellation Crux:- Crux, or the Southern Cross, is the smallest constellation. A crux is a group of four bright stars that form a Latin cross in the southern sky.
Orion:- Orion, the hunter, is one of the most recognizable constellations in the northern sky. It lies close to the Milky Way. Orion is accompanied by his faithful dogs, Canis Major and Canis Minor. The constellations can be easily found in the winter sky by observing the three stars that form a line along the middle. This line is the belt of the hunter. A well-defined dagger hangs from the belt of the hunter. The belt has the famous Large Orion Nebula.
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