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Originally posted by Donnie Darko
Hmmm, would it change things for the better? Bring people closer together? Possibly bring about world peace and a consciousness shift?
Originally posted by Raider of Truth
reply to post by Donnie Darko
How could we sleep if there wasnt a night?
on the plus side.. i guarantee crime would be at an all time low
If Betelgeuse indeed turns into a supernova, it would be visible even during the day and would remain in the night sky for months or even years before fading away
Hopi Blue Star or Blue Kachina Prophecy
An ancient Hopi Indian prophecy states, "When the Blue Star Kachina makes its appearance in the heavens, the Fifth World will emerge". This will be the Day of Purification. The Hopi name for the star Sirius is Blue Star Kachina. It will come when the Saquasohuh (Blue Star) Kachina dances in the plaza and removes his mask.
"To see this change is very striking," said Charles Townes, a UC Berkeley professor emeritus of physics who won the 1964 Nobel Prize in Physics for inventing the laser and the maser, a microwave laser. "We will be watching it carefully over the next few years to see if it will keep contracting or will go back up in size."
"But we do not know why the star is shrinking," Wishnow said. "Considering all that we know about galaxies and the distant universe, there are still lots of things we don't know about stars, including what happens as red giants near the ends of their lives."
Originally posted by InTrueFiction
... but Richard Hoagland knows so much about Betelgeuse's supernova and with such certainty that he can tell you what the magnite, direction, duration, composition and consequences on Earth would be?
A supernova (plural: supernovae) is a stellar
Astronomy is the science of Astronomical object and Phenomenon that originate outside the Earth's atmosphere . It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the physical cosmology....
An explosion is a sudden increase in volume and release of energy in an extreme manner, usually with the generation of high temperatures and the release of gases....
. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy
A galaxy is a massive, gravitation system that consists of stars and stellar remnants, an interstellar medium of gas and cosmic dust, and an important but poorly-understood component tentatively dubbed dark matter....
, before fading from view over several weeks or months. During this short interval, a supernova can radiate
In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body....
as much energy
In physics, energy is a scalar physical quantity that describes the amount of Work_ that can be performed by a force. Energy is an attribute of objects and systems that is subject to a conservation law....
as the Sun
The Sun , a G V star, is the star at the center of the Solar System. The Earth and other matter orbit the Sun, which by itself accounts for about 98.6% of the Solar System's mass....
could emit over its life span. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light
Speed of light
The speed of light in an free space is an important physical constant usually written as c, with a value of 299,792,458 metres per second....
, driving a shock wave
A shock wave is a type of propagating disturbance. Like an ordinary wave, it carries energy and can propagate through a medium or in some cases in the absence of a material medium, through a field such as the electromagnetic field....
into the surrounding interstellar medium
In astronomy, the interstellar medium is the gas and cosmic dust that pervade interstellar space: the matter that exists between the stars within a galaxy....
. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant
A supernova remnant is the structure resulting from the gigantic explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way....
Furthermore, the expanding shock waves from supernova explosions can trigger the formation of new stars.
The Columbia Encyclopedia, Sixth Edition | 2008 | The Columbia Encyclopedia, Sixth Edition.
Supernova a massive star in the latter stages of stellar evolution that suddenly contracts and then explodes, increasing its energy output as much as a billionfold. Supernovas are the principal distributors of heavy elements throughout the universe; all elements heavier than iron are produced in supernovas. Supernovas also are the principal heat source for interstellar matter and may be a source of cosmic rays . Recent discoveries have confirmed an underlying connection between supernovas and gamma-ray bursts (GRBs). Both are associated with the deaths of massive stars and they often happen nearly simultaneously. There is no generally agreed upon model for how a massive star explodes. However, the association with gamma rays has renewed interest in the role played by stellar rotation and magnetic fields.
Originally posted by MischeviousElf
Direction is meaninless the explosion like a nuke is liberated outwards from the point of event pretty uniformly in all directions.
It is likely that Betelgeuse will become a supernova. Considering its size and age of 8.5 million years – old for its size class – it may explode within the next thousand years, or may have already. Since its rotational axis is not toward the Earth, Betelgeuse's supernova would not cause a gamma ray burst in the direction of Earth large enough to damage its ecosystem even from a relatively close proximity of 640 light years. However, a Betelgeuse supernova could easily outshine the Moon in the night sky.