Gemini - Down Under

This week try to find the Gemini twins in the sky. After it gets dark, look high in the southwestern sky - almost straight overhead. There you will find two stars of nearly equal brightness. If you look a little closer you will see that one is orange-yellow and the other is blue-white. Those are the heads of the twins named Pollux and Castor. Their bodies and feet are tougher to see (just look down and to the left for more stars).

Watch out for the Kangaroo!

 AUSTRALIAN MYTH


An old Australian myth ties in the two bright stars of Gemini with the star Capella in the constellation Auriga. Castor and Pollux are two huntsmen named Yurree and Wanjil. They are hunting the elusive kangaroo named Purra (Capella). During the summer when these stars are below the horizon, it is said that the two hunters finally catch the kangaroo and kill it. They then cook his meat over a fire and cause waves of heat to rise above the ground like a shimmering haze.

The Maori of New Zealand called these two stars, "Whaka-ahu"

In African Mythology the brightest stars are The Wise and Foolish Antelope.

Others call them “Two Peacocks,” the “Two Kids,” or the “Giant’s Eyes.”

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Another Week, Another Crazy Astronomy Story

No, we're not going to have a Second Sun in 2012.



Sorry Luke...

 Last week it was the new zodiac, this week it's about Betelgeuse.  Have you heard about this?  A Senior Lecturer of Physics at the University of Southern Queensland, Dr. Brad Carter unleashed another media frenzy when he talked to a reporter about this star's impending destruction.  The article, picked up by everyone across the globe claims wrongly that the supernova of Betelgeuse (Orion's red-giant armpit star) will give us two Suns, a la the fictional planet from Star Wars, Tatooine.  My reaction, "Balderdash... pure balderdash".

What they got wrong:

1) Betelgeuse is the second largest known star in the universe.  Wrong -  it ranks around 10th in our galaxy.

2) It could go supernova as early as 2012.  Wrong - it go go any day, but there is no new evidence saying it will go by 2012.  This infamous date was added for effect (bravo reporter, sarcastic clap clap).  We will have no warning about it.  It could go today or 1,000 years from now.

3) When Betelgeuse explodes it will be as bright as the Sun and there will be no night for days.  Wrong - astronomers estimate that it will be no brighter than a full moon and won't appear that large.  From past accounts of supernovas, it should be bright enough to be visible in the day time - like a really, really bright star, and not bright enough to vanquish nighttime.

4) This will affect the Earth.  Wrong - Betelgeuse is so far away (over 600 light years) that the radiation, gamma rays, and other nasty stuff won't reach the Earth. 

Tycho's Supernova

The eventual exploding of Betelgeuse is not news.  I'm hopeful that it will explode in my lifetime, but I'm not holding my breath.  We're definitely due for a bright supernova.  The last two bright enough to be visible day and night were in 1572 and 1604.  (Those guys in the Renaissance had all the luck!).  The Supernova of 1572 was described in great detail by Tycho Brahe, Danish astronomer and loser of a nose in a mathematics-themed sword fight.  It shows up on old stars charts in the constellation Cassiopeia.  The Supernova of 1604 is often called Kepler's Supernova from the German astronomer Johannes Kepler, who came out of Brahe's shadow to become the leading astronomer of the 1600s.  Both of these supernovas blazed for weeks.  I can't wait to see one... any day now ;)

"Two Suns?" what poppycock!
Signed,
The Crabby Astronomer
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