Hercules Isn't Too Bright

This month is all about the guys in the sky. First we'll talk about Hercules and later in the month we'll explore Ophiuchus the Serpent Wrestler.
-
As strong as Hercules was, he sure has some dim stars in the sky. Hercules is not an easy guy to find up there - his brightest stars being only of third magnitude. The best way to find Hercules is to look for the keystone, or four sided figure that makes up his body. Hercules is said to be kneeling. Unfortunately for him (and our imagination), he is kneeling upside-down. Look for the brighter constellations around Hercules - Draco is above, Lyra to the left, Corona Borealis to the right, and Ophiuchus the Serpent Charmer below him.

The brightest star in Hercules is Ras Algethi which means, in ancient Arabic, "Head of the Kneeler." This must be some acrobatic kneeler standing on his head! The star is a red supergiant 600 times the diameter of our sun. that varies in brightness. Aim a small telescope at Ras Algethi and you will discover that it is really two stars in one.

The most interesting feature in the figure of Hercules is fuzzy area in the sky called M 13. M 13 is a globular cluster - a cluster of around 300,000 stars - the brightest of its kind in the northern skies. M stands for Messier object, and these are nebulae and galaxies charted by the French astronomer Charles Messier. This cluster is number 13. You can see M 13 with the naked eye but try viewing it through some binoculars to achieve a sparkling effect.
-

A Korean Star Myth with Aquila and Lyra

Once upon a time a cowherd fell deeply in love with a woman weaver. They would see each other so often that the cows were neglected and the spinning wheel scarcely turned. The father of the weaver became so enraged by this slacking off (even in the name of love) that he banished the couple into the sky.

Their love was so strong that they fell into the sky hand in hand as if gravitationally attracted. It looked as if they would finally be together until a flock of magpies flew in between the two. Their hands separated and their bodies glided slowly but surely away from each other.  The lovers struggled to reconnect but it was no use. When they stuck to the heavens, the weaver was on one side of the great river in the sky (The Milky Way) and the cowherd fell on the opposite shore. The cowherd turned into the stars Altair, Tarazed, and Alshain in the constellation Aquila - the weaver turned into Vega and stars in Lyra.

According to this Korean legend, the couple could meet only once a year on the seventh day of the seventh month. Only then could they cross the river because of the magpies. Magpies in Korea flocked like crazy in July - and to atone for their role in separating the lovers, flew up to the stars to build a bridge across the river.  Only then could the couple meet on the backs of the magpies.  In Korea, children were taught to stone any magpies they saw not helping build that bridge.

When the meeting occurs on the seventh day of the seventh month, Altair and Vega shine in 5 colors to symbolize their happiness. Unfortunately, if it rains on July 7th, the couple fails to meet at all. 

Look for Vega high in the east and Altair lower in the southeast after dark.  And check out the lovers on July 7th to see them shine happily.  

-

Lyra the Harp

This constellation represents the musical instrument invented by the messenger god Hermes. It has also been visualized as an Eagle or Vulture. Although small, Lyra holds many bright stars including the fifth brightest star in the sky, Vega.

VEGA

Vega is the brightest star in the Summer Triangle and is high overhead during the fall evenings. This blueish star is only 25 light years away and will replace Polaris as our Pole Star in about 12,000 years. Vega will be our distant ancestors' new North Star. Vega is also the place where an alien message originated in the fiction movie and book Contact.

Also called the “Queen of the Summer Skies”

“Falling Vulture” (Arab)

“Spinning Maiden” (Chinese/Korean)

“King Arthur’s Harp” (Britons)

“Fiddle in the Sky” (Bohemia)

Worshipped by ancient Egypt as early as 6000 BC

The Greek Myth of Orpheus and Eurydice

Orpheus was a tremendous harp player. He was the best that ever walked the Earth. His music was so sweet and pure that even the trees bent over to listen. The river ceased flowing, wild beasts became tame, even mountains listened with pleasure when Orpheus played his magical music.

One day he met a beautiful nymph named Eurydice. She too was mesmerized by Orpheus’ music and they fell in love and got married. Unfortunately, soon after the marriage, Eurydice was bit on the heel by a serpent and died. Orpheus was deeply saddened by her death and vowed to never play music again.

Well, no one was happy by this. Not even the gods. So the gods came to Orpheus and told him how he could cross over through the gates of death and retrieve his love Eurydice. Orpheus jumped at the idea and made the journey to the Underworld.

But first he had to deal with Hades, god of departed spirits. Hades was never anxious to let anyone leave his realm. But Orpheus began to play his harp, and Hades was so moved by the music that he agreed to release Eurydice to him on one condition (there’s always a condition). Orpheus had to walk in front of Eurydice all the way back to the land of the living. He was not allowed to turn around and look at her until they crossed through the gates of death.

Of course, Orpheus, being so much in love with this woman, could barely contain himself. They walked out of the Underworld in single file, Orpheus constantly listening for his beloved's soft footsteps. Upward and upward he marched never sure if Eurydice was there behind him. And he saw the end of the tunnel ahead - he had almost reached the light of day. But then doubt entered his head. Eurydice’s footsteps fell silent. Was she really there? Was he tricked by Hades? And if he went outside could he ever come back? Orpheus finally couldn't take it any longer and turned to look at his beloved. There she was, as radiant as he remembered her. And in another moment, her smile faded, faded, and she vanished forever.

Lyra, Orpheus’ harp remains in the sky as a reminder of true love, love lost, and why death is so hard to cheat.

-

SUMMER TRIANGLE

During the heart of summer three bright stars make a large, noticeable triangle in the sky (Vega, Deneb, and Altair). This Summer Triangle can be seen even from the most light polluted skies. Although it makes a nice urban constellation, each star is really part of its own heavenly picture.

High up in the sky is bright, blue Vega. Vega is where the aliens from the movie Contact were calling from. Not too far away (only 25 light years), Vega is part of the constellation called Lyra the Harp. Lyra looks like a small parallelogram.

Down and to the left is dimmer star called Deneb. Deneb is a whopping 3,000 light years away - making it the farthest star you can see with the naked eye. This is the tail of the swan, the constellation Cygnus - and these stars actually look like a swan with a stretched out neck going to the right and wings up and down. Cygnus is also called the North Cross because, well, it looks like a cross jutting into the center of the Summer Triangle.

To the right is bright, white Altair. Altair is the head of the constellation Aquila, the Eagle. Although the Eagle might be tough to imagine from the stars, Altair is easy to find because it has two dimmer stars bracketing it.  And it's so bright because it's only 17 light years away.

Look for the Summer Triangle hight in the eastern sky after sunset - closer to overhead later at night.
-