This was very important so that people knew when to plant and harvest crops.Īnother important use for constellations was navigation. They were used to help keep track of the calendar. The constellations had uses in ancient times. By looking for patterns, the stars and locations can be much easier to spot. Twelve of these are also used as signs for the zodiac calendar and astrology.Ĭonstellations are useful because they can help people to recognize stars in the sky. This band is considered special because it is the band where the Sun, the Moon, and the planets all move. The zodiac constellations are the constellations that are located within a band that is about 20 degrees wide in the sky. Its brightest stars are Betelgeuse and Rigel.
Orion is named after a hunter from Greek mythology. Because of its location, it can be seen throughout the world. Orion is one of the most visible constellations. Here are a few of the more famous constellations: The season of the year can also affect what constellations are visible from where you are located on Earth. The star maps are typically divided into maps for the northern hemisphere and maps for the southern hemisphere. Not all of the constellations are visible from any one point on Earth. Some of them are bright because they are close to Earth while others are bright because they are very large stars. The stars in each constellation may not be close to each other at all. The maps of the stars represent the position of the stars as we see them from Earth. Star maps are made of the brightest stars and the patterns that they make which give rise to the names of the constellations. The 88 different constellations divide up the entire night sky as seen from all around the Earth. This included 48 ancient constellations listed by the Greek astronomer Ptolemy as well as 40 new constellations. The sky was divided up into 88 different constellations in 1922. The pattern they form may take the shape of an animal, a mythological creature, a man, a woman, or an inanimate object such as a microscope, a compass, or a crown.
Most of the constellations in the Northern Hemisphere are based on the constellations invented by the ancient Greeks, while most in the Southern Hemisphere are based on names given to them by seventeenth century European explorers.A constellation is a group of visible stars that form a pattern when viewed from Earth. The International Astronomical Union (IAU) divides the sky into 88 official constellations with exact boundaries, so that every place in the sky belongs within a constellation. Astronomers use the term constellation to refer to an area of the sky. The patterns of stars seen in the sky are usually called constellations, although more acurately, a group of stars that forms a pattern in the sky is called an asterism. The Chemehuevi Native Americans of the California desert saw the same group of stars as a line of three sure-footed mountain sheep. For example, the pattern that the Greeks named Orion (the hunter) was also seen by the ancient Chinese who saw it as a supreme warrior named Shen. People of nearly every culture throughout history have looked at the stars and given names to shapes they saw, they even invented stories to go with them. As you look at these stars, your mind may group them into different shapes or patterns. Away from city lights on a clear, moonless night, the naked eye can see 2000-3000 stars.
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