Betelgeuse to go Supernova

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iata ce spune un prieten de-al meu de pe un forum pe care il frecventez regulat:

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I was talking to my son last week (he works on Mauna Kea), and he mentioned some new observations (that will no doubt get published eventually) of “Beetlejuice”; it’s no longer round. This is a huge star, and when it goes, it will be at least as bright as that 1054 supernova… except that this one is 520 light years away, not 6,300:
SN 1054 (Crab Supernova) was a supernova that was widely seen on Earth in the year 1054. It was recorded by Chinese, Japanese, Native Americans, and Persian/Arab astronomers as being bright enough to see in daylight for 23 days and was visible in the night sky for 653 days. The progenitor star was located in the Milky Way galaxy at a distance of 6,300 light years and exploded as a core-collapse supernova.

When it collapses, it will be at least as bright as the full moon, and maybe as bright as the sun.  For six weeks.  So the really lucky folks (for whom Betelgeuse is only visible at night) will get 24 hour days, everybody else will get at least some time with two suns in the sky.  The extra hour of light from daylight savings time won’t burn the crops, but this might.  Probably, all we’ll get is visible light (not gamma rays or X-rays), so it shouldn’t be an ELE.  It’s sure gonna freak everyone out, though…

Then it will form a black hole, but we’re too far away for that to matter.

The buzz is that this is weeks/months away, not the “any time in the next thousand years” that’s in all the books.

For your reading pleasure (and I left out the tinfoil, but a google search will turn up plenty):

Betelgeuse is a semiregular variable star located approximately 640 light-years from the Earth. With an apparent magnitude ranging between 0.3 and 1.2, it is the ninth brightest star in the night sky. Although Betelgeuse has the Bayer designation Alpha Orionis (α Orionis / α Ori), it is most often the second brightest star in the constellation Orion behind α; Rigel (Beta Orionis) is usually brighter (Betelgeuse is a variable star and is on occasion brighter than Rigel). The star marks the upper right vertex of the Winter Triangle and center of the Winter Hexagon.

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. The angular diameter of Betelgeuse was first measured in 1920–1921 by Albert Abraham Michelson and Francis G. Pease using the 100 inch (2.5 m) John D. Hooker astronomical interferometer telescope atop Mount Wilson Observatory.

Astronomers believe Betelgeuse is only a few million years old, but has evolved rapidly because of its high mass. Due to its age, Betelgeuse may supernova within the next millennium (because it is hundreds of light years away, it possibly may have done so already).

sursa 2:

Great informational article about a star in the Orion constellation, Betelgeuse, and when it will go supernova.

Its coming and it may reach Earth before 2012. In fact the gamma rays from the Orion star Betelgeuse, when it goes ballistic [Supernova] may hit us any day!

Many people are predicting the end of the Earth when the second brightest star of the Orion Constellation goes Nova. The Internet is being flooded with articles concerning the event is part of the Mayan Calendar 2012 predictions and the end of the world. But what are the facts about this very unusual event located approximately 600 – 800 million light years away from Mother Earth?

It is also interesting to note that the name of this red star is Betelgeuse, is associated with the “Devil” and evil machinations. Yet, the name Betelgeuse is a corruption of the Arabic word “yad al jauza,” which means the “hand of al-jauza.”. The word “al-jauza” is an ancient Arabic derivative which refers to “Central One,” or a mysterious woman.

The history of the bright star name Betelgeuse is a good example of how scholarly errors can slip into modern spoken word. Very early in pre-Islamic Arabia astronomers, called the star yad al-jawzā’, “hand of the jawzā’.” The jawzā’ was their name for the constellation Gemini. Greek astronomy blended with Arabian astronomy, the word was given to the bright star in the constellation Orion. Centuries later, scribes writing in Medieval Latin rendered the word misread the y as a b, which became the Medieval Latin form Bedalgeuze. During the Renaissance era, another set of scholars interpreted the first syllable bed– as being derived from a putative Arabic word *bāṭ meaning “armpit.” This word did not exist; it would correctly have been ibṭ. Nonetheless, the error stuck, and the new etymological spelling produced Betelgeuse, that melded into French as Bételgeuse, and finally in Late Old English as Betelgeuse.

But here are the scientific facts (theories and conjectures based on reason):

  1. One day Betelgeuse will appear as a giant explosion in the sky, which may be 4 times the size of a full moon.
  2. Most scientists believe the star is far enough away from Earth that the explosion blast and various particle rays emitted will not affect us drastically (if at all).
  3. This star is a huge mass of hydrogen gas that is (or did) going through a fusion process that changes the matter into heavier elements.
  4. It is one of the largest stars known in the universe to human astronomy.
  5. On June 9th, 2009 it was presented to The American Astronomical Society that Betelgeuse was shrinking. Calculations from 1993 to the present show a 15% decrease in the stars diameter.
  6. It is a pulsating star, whose brightness changes with the density of its atmosphere: 0.2 – 1.2 brightness magnitude, which makes it one of the 10 brightest stars in our sky.
  7. Betelgeuse is surrounded by many layers of dust and gas that it has already blown off through a very strong stellar wind and surround the star in a ring of solar dust.
  8. Betelgeuse is projected by science to be only 6 – 10 million years old.
  9. Science says the star had a core made of hydrogen and thermonuclear fusion has already run out at its core, thus gravity has contracted the core into a hotter and denser state. This process fuses helium into carbon and oxygen which produce enough radiation to swell out its outer layers of hydrogen and helium.
  10. The red star is relatively rich in nitrogen compared to a less evolved star like our Sun (Lambert 1984).
  11. In 1995 astronomers found an enormous bright area more than 2,000 °K, hotter than the surrounding surface of the star (Gilliland & Dupree, 1996).
  12. Betelgeuse’s diameter is roughly 500 times that of the Sun.
  13. If and when it turns into a supernova the threat to Earth would be from the blast waves. Is Betelgeuse one of the “smoking stars” to which Nezahualcoyotl referred in his 15th century Aztec prophecy? It probably will not cause any direct physical destruction, due to the huge distance between Betelgeuse and the Earth.

daca acestea sunt doar zvonuri, sau daca evenimentul se va produce ramane de vazut. poate noi vom fi martorii acestui eveniment cosmic de proportii gigantice.

Comments on: "Betelgeuse to go Supernova" (1)

  1. Asta-i foarte tare; daca zice ca noi nu vom fi afectati. Daca stau bine sa ma gandesc, nu vom fi afecati fizic, dar sa vezi ce nebunie o sa se iste… Toate sectele si toti nebunii… O sa faca astia sa fie sfarsitul lumii. Sper ca nu; poate se vor abtine.