“No known roof is as beautiful as the skies above”

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Presentation transcript:

“No known roof is as beautiful as the skies above”

The celestial sphere is divided into 88 constellations Twelve of the 88 constellations reside on or near the ecliptic, the Sun’s path across the sky over a 365-day (one year) period. These twelve constellations are referred to as the Signs of the Zodiac.

SIGNS OF THE ZODIAC ConstellationObject RepresentedDates of the Sun Capricornus “The Sea Goat”Dec 22 – Jan 20 Aquarius“The Water Carrier”Jan 21 – Feb 19 Pisces“The Fishes”Feb 20 – Mar 20 Aries“The Ram”Mar 21 – Apr 20 Taurus“The Bull”Apr 21 – May 20 Gemini“The Twins”May 21 – Jun 21 Cancer“The Crab”Jun 22 – Jul 22 Leo“The Lion”Jul 23 – Aug 23 Virgo“The Virgin”Aug 24 – Sep 22 Libra“The Scales”Sep 23 – Oct 23 Scorpius“The Scorpion”Oct 24 – Nov 22 Sagittarius“The Archer”Nov 23 – Dec 21

Taurus “The Bull” Orion “The Hunter” Some are more easily recognized than others

Ursa Major “The Big Bear” Body of the Bear Tail of the Bear The Big Dipper The Big Dipper is an example of what astronomers call an asterism. An asterism is a commonly recognized grouping of stars but not one of the 88 official constellations. The Big Dipper is part of the constellation Ursa Major. It is only part of the constellation.

In a constellation the brighter stars are designated using the lower case Greek alphabet starting with α for the brightest, β for the second brightest, and so on. αalpha βbeta γgamma δdelta ε epsilon The first five letters in the Greek alphabet are:

The Greek letter is followed by the first three letters of the constellation’s one-word name. If the constellation has a two-word name, use the first letter of the first word followed by the first two letters of the second. One-Word NameTwo-Word Name Orion= OriUrsa Major= UMa Taurus= TauUrsa Minor= UMi Leo= LeoCanis Major= CMa Eridanus= EriCanis Minor= CMi

Orion Orion can be easily seen in the night sky from late fall to winter in the Northern Hemisphere Know as The Hunter Followed by his faithful hunting dog Canis Major – Contains the bright star Sirius – Sometimes called the Dog Star

Orion Son of the sea- god Neptune. He challenged the Gods, boasting that he could kill every animal on Earth. As a result of this, Earth conjured up an enormous scorpion, one which Orion could not defeat. In the end, Orion was killed by the scorpion, and both him and the scorpion were put up in the sky as constellations. (the scorpion is known as "Scorpio")

Orion’s Belt May be reflected in the layout of the three Great Pyramids in Egypt

Betelgeuse Semi regular variable star located approximately 640 light- years from the Earth. The second brightest star in Orion and the ninth brightest star in the night sky.

Betelgeuse Betelgeuse is a red supergiant, and one of the largest and most luminous stars known. For comparison, if the star were at the center of our solar system its surface might extend out to between the orbits of Mars and Jupiter, wholly engulfing Mercury, Venus, the Earth and Mars.

Betelgeuse Astronomers believe Betelgeuse is only a few million years old, but has evolved rapidly because of its high mass. Some astronomers believe it may become a supernova within a timeframe where it could be observable by human civilization.

Orion Nebula A nebula is a cloud of gas and dust in space. On a clear winter night, you can see with your naked eye the Great Nebula of Orion as a fuzzy wisp in Orion’s sword.

Orion Nebula At the center lie four brilliant blue-white stars known as the Trapezium. Like a great thundercloud illuminated from within, the churning currents of gas and dust suggest immense power.

Orion Nebula A deeper significance lies hidden behind the visible nebula. Radio and infrared astronomers have discovered a vast dark cloud just beyond the visible nebula in which stars are now being created.

Cassiopeia Symbolism: the Seated Queen Right ascension: 1h Declination: +60° Main stars: 5

Cassiopeia After promising her daughter in marriage to Perseus, Cassiopeia had second thoughts. She convinced one of Poseidon's sons, Agenor, to disrupt the ceremony by claiming Andromeda for himself. Agenor arrived with an entire army, and a fierce struggle ensued. In the battle Cassiopeia is said to have cried "Perseus must die". At any rate it was Perseus who was victorious, with the help of the Gorgon's head.

Cassiopeia Perseus had recently slain Medusa, the Gorgon, and had put its head in a bed of coral. He retrieved the head and waved it in midst of the warring wedding party, instantly turning them all to stone. In the group was both Cepheus and Cassiopeia. A contrite Poseidon put both father and mother in the heavens. But because of Cassiopeia's vanity, he placed her in a chair which revolves around the Pole Star, so half the time she's obliged to sit upside down.

Ursa Major – The Great Bear Right Ascension: 11 hours Declination: 50 degrees Visible between latitudes 90 and -30 degrees Best seen in April (at 9:00 PM)

Ursa Major – The Great Bear According to some Native American legends, the bowl of the Big Dipper is a giant bear and the stars of the handle are three warriors chasing it. The constellation is low in the sky in autumn evening sky, so it was said that the hunters had injured the bear and its blood caused the trees to change color to red.

Ursa Major – The Great Bear One day Callisto, who was turned into a bear previously by Hera, found herself face-to-face with a young and handsome hunter and suddenly recognized him as her son, Arcas. She raised up on her hind legs to embrace her son. Thinking that the bear was about to attack him, Arcas raised his spear and was about to hurl it and kill his mother. Zeus happened to be looking down on the scene from his position on Mt. Olympus and instantly turned Arcas into a bear also. Zeus then grasped each bear by its tail and tugged and tugged until he had managed to lift both high into the sky, Callisto as Ursa Major and her son Arcas as Ursa Minor.

Ursa Major – The Great Bear This tugging of tails over such a long journey through the sky, stretched both tails and explains why our celestial bears, unlike earthly ones, have long tails. The tail of Arcas became even longer since he was continuously swung around the sky by the end-star in his tail, Polaris.

Ursa Major – The Great Bear On discovering that her husband had given Callisto and Arcas honored places in heaven, Hera was furious. She went down to Earth to visit her friend the ocean god, Oceanus. She asked that he forever keep the two penned so that they may never wander far. Oceanus was sympathetic and promised that he would grant Hera her wish. He would see to it that "the couple never would be permitted to enter our water in their wandering," in other words, that the bears forever would be forbidden to set below the horizon of the sea as other constellations do. To this day both the Lesser Bear and the Greater Bear are held high in the sky near the Pole Star, never permitted to sink beneath the sea horizon.

Ursa Minor – The Little Bear Often called the Little Dipper Constellation in the northern sky. Its name is Latin for 'little bear', contrasting with Ursa Major, the Great Bear. Like the big dipper, the handle of the little dipper is the tail of the "little bear". It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. Notable as the location of the north celestial pole, although this will change after some centuries due to the precession of the equinoxes.