all about constellations pdf

all about constellations pdf插图

What is the history of constellations?

THE CONSTELLATIONS : Part 1 The Origin of the ConstellationsI N T R O D U C T I O N. …The Ancient Constellations. From the Ancient Chinese perspective,their culture has recognised and held various important constellations for the longest time — spanning several millennia.The Classical Constellations. …Formulation of the Modern Constellations. …Endnotes. …

Why are constellations important?

They help in dividing the sky into hemispheres.They are used in grouping stars in the night sky .You can use constellations to know the time of year and the season you’re in . …Last but probably the most important is navigation. In ancient times sail

What is the origin of constellations?

constellation go back as far as the Akkadian and Sumerian civilisations around 3,500 B.C. Many of these groups were later adopted by the Greeks, and include Scorpion, Orion, the bull (Taurus) and the lion (Leo.) Here also derives the main twelve constellations of the zodiac, being the path of the Sun, Moon and planets

What are visible constellations?

The Orion Constellation. Orion is one of the most famous and most prominent constellations you can see. It is visible all over the world and rests on the celestial equator line. This constellation got its name from a Greek hunter named Orion. In Greek mythology, Orion was a hunter that the god Zeus placed among the stars.

Why do we see constellations in the winter?

seasonal constellationsduring certain seasons. On a summer night, people on Earth are looking out toward one direction in space. On a winter night, those same people are looking at a different part of space. Therefore, they see different constellations. People in the Northern Hemisphere can see the Little Dipper all year long. That’s because this constellation is directly north of Earth’s axis. As Earth orbits the Sun, the dipper appears to move in a circle around the sky. For this reason, it is called a circumpolar constellation. People in the Southern Hemisphere can’t see the Little Dipper. But they have a few circumpolar constellations of their own.

What constellations are seen in the Northern Hemisphere?

Since they are looking at a different part of space, the constellations they see are different. Scorpius, Leo, and Orion are seasonal constellations. But people in the Northern Hemisphere can see the Little Dipper (Ursa Minor) all year.

Why do people see the little dipper all year long?

That’s because this constellation is directly north of Earth’s axis. As Earth orbits the Sun, the dipper appears to move in a circle around the sky.

What do you call the shapes you see when you connect the dots?

If you connect the dots, you might imagine shapes called constellations . The constellations you see depend on where you live and the season. People near the North Pole can see the constellations that are to the north of Earth in space. People near the South Pole can see the constellations that are to the south.

How do you know if you can see constellations?

These shapes are called constellations. The constellations you can see depend on where you live. They also depend on the season. People near the North Pole can see the constellations that are to the north of Earth. People near the South Pole can see the ones that are to the south. People who live in between can see some of both. It depends on how close they are to the equator. But Earth doesn’t sit still. It orbits the Sun. As it moves, the seasons change. The constellations that people can see change, too. At nighttime during the summer, people on Earth face one direction in space. On a winter night, they face the other As Earth orbits the Sun, the dipper direction. So, they see different constellations.

What constellations are visible in the night sky?

2. Orion is visible in the night sky during winter in the Northern Hemisphere. Earth, Sun, and Stars  Constellations3. Gemini is visible in the night sky during winter in the Northern Hemisphere. 4. Taurus is visible in the night sky during late winter/early spring in the Northern Hemisphere.

Can you see the Little Dipper all year?

Illustration credits: Signe Nordin/© Learning A–Z. Scorpius, Leo, and Orion are seasonal constellations. But people in the Northern Hemisphere can see the Little Dipper (Ursa Minor) all year. not to scale. The constellations are still there during the day. You just can’t see them because the Sun is so bright.

What constellation represents Orion’s hunting dogs?

This constellation represents the smaller of Orion’s hunting dogs. There is little to note about it except the bright star Procyon. Interestingly, Procyon, like Sirius, has a white dwarf companion.

What is the brightest star in the constellation?

The brightest star in this constellation is named “Cor Caroli”, or the “Heart of Charles II”, and is a colorful (orange and blue) double star in small telescopes. How to remember Canes Venatici: Two stars, two dogs.

What does Capella represent?

This constellation has also been referred to as the Ploughman. The bright star Capella represents a she-goat. One responsibility of ploughman and charioteers was the care of livestock, and Capella represents this. In some stories, Capella represents the she-goat that nursed or provided milk for the infant Jupiter when he was being hidden from the wrath of his father Saturn.

Why is the grouping of stars called the Lynx?

She turned him into a lynx and made him difficult to see. Others say that at least part of the reason for the name of this grouping is that one needs the eyes of a lynx to see them .

What is the first zodiac sign?

One story is that this is the Ram with the Golden Fleece that Jason and the Argonauts were sent to recover . Another story is that this represents the rams which Odysseus and his men hid under to escape from the blinded Cyclops. This story has the additional appeal in that the Sun is in Aries at the beginning of spring. The analogy is that Odysseus hid under a ram to escape from the dark cave of the Cyclops into the bright outdoors, while in the Ram the sun returns from the dark of winter into the light of spring.

Why did Apollo turn the crow black?

Another says that the crow was originally a different color (some say snow white, others silver) and had a beautiful voice. He was once sent on an errand by Apollo to fetch a cup of water (Crater). Along the way, the crow was distracted by food and returned much later than he should have. As punishment, Apollo turned him black and gave him the terrible voice we know the crow by today. In addition, he set both the crow and cup near the Hydra with the order that the Hydra prevent Corvus from drinking (from the cup) forever. Finally, a third story says Apollo turned the crow black for being the bearer of bad news – in this case, it was the impending marriage of the woman Coronis to another man. Coronis was carrying Apollo’s child at the time (see Ophiuchus). How to remember Corvus: A trapezium of stars with a short “tail”, it sits adjacent to Crater, and on the back of the Hydra.

How many heads does the Hydra have?

This is one of the foes that Hercules had to overcome in his Twelve Labors. The Hydra was said to have nine heads, one of which was immortal. If you cut off any head, two were said to grow in its place. Hercules finally overcame the Hydra by burning the neck stump after cutting off a head, thereby cauterizing it and preventing new heads from growing. The immortal head was disposed of by burying it under a huge rock, effectively removing it as a threat. The Hydra is a huge constellation, stretching over a significant fraction of celestial real estate. Unfortunately, it is also rather unremarkable and contains only one brighter star. Although the story gives it nine-heads, there is no equivalent in the shape of the constellation. How to remember Hydra: It’s long – like a giant snake should be. The head is a relatively easy asterism to pick out, just below Cancer and Leo. Interestingly, it is NOT located in the “Sea”, or even next to Hercules.

What is the brightest star in the constellation?

The brightest star in this constellation is named “Cor Caroli”, or the “Heart of Charles II”, and is a colorful (orange and blue) double star in small telescopes. How to remember Canes Venatici: Two stars, two dogs.

What is the crab in the constellation of Hercules?

The classical story is that the crab was sent by Juno (Hera) to distract Her cules while he was trying to kill the Hydra, one of his twelve labors. You’ve got to wonder what she was thinking – Hercules simply smashed it with his foot, and went on to kill the Hydra. This is the faintest constellation in the zodiac, but it does contain the Praesepe, or Beehive. This star cluster can just be seen as a fuzzy patch with the naked eye, and is spectacular in binoculars and small telescopes.

What is the meaning of the constellation of Caelum?

Interestingly, there is another meaning for caelum – “the sky”. How to remember Caelum: Two stars make a straight line and resemble a chisel.

Why is the Milky Way compass important?

Milky Way Like the octant (Octans), the compass helped modernize the science of navigation and made long ship exploration possible. However, this faint constellation is difficult to see, especially in the background of the Milky Way.

What does Capella represent?

This constellation has also been referred to as the Ploughman. The bright star Capella represents a she-goat. One responsibility of ploughman and charioteers was the care of livestock, and Capella represents this. In some stories, Capella represents the she-goat that nursed or provided milk for the infant Jupiter when he was being hidden from the wrath of his father Saturn.

Why did Apollo turn the crow black?

Another says that the crow was originally a different color (some say snow white, others silver) and had a beautiful voice. He was once sent on an errand by Apollo to fetch a cup of water (Crater). Along the way, the crow was distracted by food and returned much later than he should have. As punishment, Apollo turned him black and gave him the terrible voice we know the crow by today. In addition, he set both the crow and cup near the Hydra with the order that the Hydra prevent Corvus from drinking (from the cup) forever. Finally, a third story says Apollo turned the crow black for being the bearer of bad news – in this case, it was the impending marriage of the woman Coronis to another man. Coronis was carrying Apollo’s child at the time (see Ophiuchus). How to remember Corvus: A trapezium of stars with a short “tail”, it sits adjacent to Crater, and on the back of the Hydra.

What is the first zodiac sign?

One story is that this is the Ram with the Golden Fleece that Jason and the Argonauts were sent to recover . Another story is that this represents the rams which Odysseus and his men hid under to escape from the blinded Cyclops. This story has the additional appeal in that the Sun is in Aries at the beginning of spring. The analogy is that Odysseus hid under a ram to escape from the dark cave of the Cyclops into the bright outdoors, while in the Ram the sun returns from the dark of winter into the light of spring.

What constellations are used to find Polaris?

The main constellations to learn are Ursa Major (the Big Dipper) and Cassiopeia. Neither of these constellations ever sets. Use them to locate Polaris, also known as the North Star. The Big Dipper and Cassiopeia are always opposite each other and rotate counterclockwise around Polaris, with Polaris in the center.

How many stars are in the Big Dipper constellation?

The Big Dipper is a seven star constellation in the shape of a dipper. The two stars forming the outer lip are the pointer stars. Cassiopeia has five stars that form a shape like a “W” on its side. The North star is straight out from Cassiopeia’s center star.

How many constellations are there in the sky?

The constellations have changed over time. In our modern world, many of the constellations have been redefined so now every star in the sky is in exactly one constellation. In 1929, the International Astronomical Union adopted official constellation boundaries that defined the 88 official constellations that exist today.

Why are constellations important?

The constellations play an important role in Modern astronomy. They bring order to the sky by dividing it into smaller segments, providing a base for naming celestial objects.

What are the objects that astronomers use to locate objects?

Astronomers use the constellations to help locate objects such as galaxies , nebula and star clusters. In Scorpius we have Messier objects, NGC objects and IC objects.

What was the Big Dipper used for?

The Big Dipper was also known as the Drinking Gourd and slaves trying to make their way to freedom used it as a guidepost to find their way North and escape the bonds of slavery.

How many stars can you see in a dark night?

On a really dark night, you can see about 1000 to 1500 stars. Trying to tell which is which is hard. The constellations help by breaking up the sky into more manageable bits.

What is the name of the constellation of the zodiac?

LATIN NAME OF CONSTELLATION ———– Taurus Taurus is the second constellation of the zodiac; the sun is in Taurus from May 14 to June 21. (Ref. 2, p. 188)

What is the Latin name of the constellation?

LATIN NAME OF CONSTELLATION ———– Capricornus This is the tenth constellation of the zodiac and the sun is in this constellation from January. 20 to February 15 (Ref. 14)

What are the colors of stars?

The telescope, which increases the amount of light, further discloses the star?s color. The easily noticed colors are red, yellow and bluish-white. A star?s color is directly associated with its surface temperature; blue stars are hot stars and red stars are cooler stars. Yellow, the color of our Sun, is the color band to which the human eye is most sensitive.

What is a constellation?

A constellation is a group of stars, which might form a pattern or shape within a specific area of the sky and is often named after people, animals or objects. There are 88 constellations whose boundaries were established in the late 1920?s and published in 1930 by the International Astronomical Union.

Why are constellations best seen at the zenith?

The constellations are best seen at culmination because you are looking through less of the Earth’s atmosphere. Dim stars can best be seen in the direction of the zenith, remembering that even the bright sun is dimmed toward one?s horizon at setting or rising. The apparent magnitude difference from the zenith to the horizon is approximately two magnitudes dimmer in brightness.

Which alphabet is the brightest star?

Johannes Bayer used the lower case letters of the Greek alphabet todesignate the brightness of stars in a constellation. Alpha is the brighteststar but there are a few exceptions to his procedure. See page16, itemnumber eight.

What year were the Russell constellations listed?

The constellations on Russell’s list corresponded to those listed in the Revised Harvard Photometry star catalogue (1908) , published by Harvard College Observatory.

How many constellations are there?

There are 88 constellations officially recognized by the International Astronomical Union (IAU). 36 modern constellations predominantly lie in the northern sky, while 52 are found in the southern celestial hemisphere. Most constellations (more than 40) represent animals. Many were named after humans or figures from mythology, …

Who created the constellation list?

The constellation list was produced by American astronomer Henry Norris Russell and adopted by the International Astronomical Union (IAU) at its General Assembly in Rome in May 1922.