Fear no supernova

Dec 16, 2011
Supernova 1987A was the closest exploding star seen in modern times. It occurred in the Large Magellanic Cloud, a small galaxy that orbits our own Milky Way. Images taken by NASA's Hubble Space Telescope were combined to make this composite of the blast's expanding debris. Credit: Credit: NASA / ESA / P. Challis and R. Kirshner (Harvard-Smithsonian Center for Astrophysics)

Given the incredible amounts of energy in a supernova explosion – as much as the sun creates during its entire lifetime – another erroneous doomsday theory is that such an explosion could happen in 2012 and harm life on Earth. However, given the vastness of space and the long times between supernovae, astronomers can say with certainty that there is no threatening star close enough to hurt Earth.

Astronomers estimate that, on average, about one or two supernovae explode each century in our galaxy. But for Earth's ozone layer to experience damage from a , the blast must occur less than 50 light-years away. All of the nearby stars capable of going supernova are much farther than this.

Any planet with life on it near a star that goes supernova would indeed experience problems. X- and gamma-ray radiation from the supernova could damage the ozone layer, which protects us from harmful ultraviolet light in the sun's rays. The less ozone there is, the more UV light reaches the surface. At some wavelengths, just a 10 percent increase in ground-level UV can be lethal to some organisms, including phytoplankton near the ocean surface. Because these organisms form the basis of oxygen production on Earth and the marine food chain, any significant disruption to them could cascade into a planet-wide problem.

Another explosive event, called a gamma-ray burst (GRB), is often associated with supernovae. When a massive star collapses on itself -- or, less frequently, when two compact neutron stars collide -- the result is the birth of a black hole. As matter falls toward a nascent black hole, some of it becomes accelerated into a particle jet so powerful that it can drill its way completely through the star before the star's outermost layers even have begun to collapse. If one of the jets happens to be directed toward Earth, orbiting satellites detect a burst of highly energetic gamma rays somewhere in the sky. These bursts occur almost daily and are so powerful that they can be seen across billions of light-years.

A gamma-ray burst could affect Earth in much the same way as a supernova -- and at much greater distance -- but only if its jet is directly pointed our way. Astronomers estimate that a gamma-ray burst could affect Earth from up to 10,000 light-years away with each separated by about 15 million years, on average. So far, the closest burst on record, known as GRB 031203, was 1.3 billion light-years away.

As with impacts, our planet likely has already experienced such events over its long history, but there's no reason to expect a gamma-ray burst in our galaxy to occur in the near future, much less in December 2012.

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User comments : 23

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dan42day
2.3 / 5 (6) Dec 16, 2011
"but there's no reason to expect a gamma-ray burst in our galaxy to occur in the near future, much less in December 2012"

Unless of course some aliens raced here 3000 years ago in way faster than light spaceships and warned us about it.
fmfbrestel
5 / 5 (3) Dec 16, 2011
Unless of course some aliens raced here 3000 years ago in way faster than light spaceships and warned us about it.

lol

But even without kind aliens we have the same odds of a gamma-ray burst hitting us at any time, near future or otherwise. So really there is no reason to believe we have LESS odds of one hitting us in the next year than in any other year.
CapitalismPrevails
1 / 5 (1) Dec 16, 2011
What about gamma ray bursts from WR104?
fmfbrestel
1.7 / 5 (6) Dec 16, 2011
"but there's no reason to expect a gamma-ray burst in our galaxy to occur in the near future, much less in December 2012"

Thats kinda like realizing that eventually I might get in a car accident in which the seat belts will save my life, but this isnt eventually, its right now, so i dont need to wear my seat belt on this trip because eventually is a long time from now.

^^ longest sentence ever, sorry.
yyz
4.8 / 5 (4) Dec 16, 2011
"What about gamma ray bursts from WR104?"

A spectroscopic study of WR 104 in 2008 found that the system is inclined >30 degrees away from us, much more than originally thought, so this system might put on a good light show (d=8 kly) but no "death ray" scenario: http://www.univer...ter-all/
eachus
3.7 / 5 (3) Dec 16, 2011
Sigh! How do they know that Sirius B hasn't already exploded as a Type Ia supernova? I'm not trying to start a scare here but dismiss the original article as total drivel.

Sirius B is one of the largest white dwarfs known, and has a carbon-oxygen core. Right now Type Ia supernova are believed to occur when a white dwarf accretes additional mass from a binary companion and induces gravitational collapse in the core. I think when Sirius A becomes a red giant (which of course, hasn't happened yet), that a supernova won't be far behind. (Less than a million years.)

There is a good chance that the next supernova in the Milky Way galaxy will be Eta Carinae. It is a double star about 8,000 light years from Earth, and it has probably already exploded. Well, in 1843 Eta Carinae gave off as much light as a supernova--and survived. Other such supernova imposters have later exploded as supernovas. If you have seen the Hubble picture of Eta Carinae, you can tell it is just a matter of time.
omatumr
1.2 / 5 (19) Dec 16, 2011
can say with certainty there is no threatening star close enough to hurt Earth ??


No!

Experimental data and observations selectively ignored after 1971 [1] provide irrefutable evidence of an ill-tempered pulsar at the core of the Sun.

Nevertheless, there is solid empirical evidence [2]:

a.) The great reality that surrounds and sustains life on Earth is benevolent, not dangerous, as world leaders claim.

b.) Life either evolved here to fit local conditions remarkably well, or

c.) Local conditions are remarkably well designed to sustain life.

Either way, the great reality that surrounds and sustains life on Earth is benevolent. No one need live in fear of fabricated tales of danger by politicians and scientists who manipulated data and observations.

1. http://dl.dropbox...asks.pdf

2. http://judithcurr...t-150818

Oliver K. Manuel
www.omatumr.com
http://myprofile....anuelo09
omatumr
1.3 / 5 (14) Dec 16, 2011
Sorry, link #2 above was removed by the blog owner.

Try this one instead:

www.physorg.com/n...orm.html
jsdarkdestruction
4.1 / 5 (9) Dec 17, 2011
Counterspam oliver!

how did i know i would find a bunch of nonsense conspiracy posts from oliver? oh yeah, he does it all the time. Anyway, oliver, that is a bunch of horseshit. Their is no global conspiracy to hold back your neutron repulsion theory of the sun, whats holding it back is the lack of any evidence not written by you or a friend who used your work as a basis. if thats not the case then you claim old obsolete data supports you when newer data clearly refutes it.
chip_engineer
5 / 5 (4) Dec 17, 2011
I find these supernova collapses fascinating, just think of all the Thorium and Uranium they will produce.

I hope the good aliens on the future planets that are accreting this stuff appreciate it more than some of our peeps do.
omatumr
1.3 / 5 (14) Dec 17, 2011
I find these supernova collapses fascinating, just think of all the Thorium and Uranium they will produce.


The supernova that produced the Solar System also produced a lot of Pu-244, as Professor Paul K. Kuroda reported in Nature in 1960, in a paper that convinced me to join forces with him to explore the origin of the Solar System and its elements.

The implications of Kuroda's 1960 discovery are explained in the largest chapter in the Proceedings of the 1999 ACS Symposium that Professor Glenn T. Seaborg and I organized: "Origin of Elements in the Solar System: Implications of Post 1957 Observations."

www.amazon.com/Or...06465620

With kind regards,
Oliver K. Manuel
www.omatumr.com
http://myprofile....anuelo09
FrankHerbert
1 / 5 (52) Dec 17, 2011
"Counterspam oliver!

how did i know i would find a bunch of nonsense conspiracy posts from oliver? oh yeah, he does it all the time. Anyway, oliver, that is a bunch of horseshit. Their is no global conspiracy to hold back your neutron repulsion theory of the sun, whats holding it back is the lack of any evidence not written by you or a friend who used your work as a basis. if thats not the case then you claim old obsolete data supports you when newer data clearly refutes it."
Jonny555
5 / 5 (1) Dec 17, 2011
Doesn't really matter if Earth is about to be hit or not. If we are going to be hit by a close enough event we couldn't do anything about it anyway. What's the point in worrying about something we either have no control over or any defence against.
omatumr
1 / 5 (7) Dec 17, 2011
Doesn't really matter if Earth is about to be hit or not. What's the point in worrying about something we either have no control over or any defence against.


The whole AGW scam is about PRETENDING control !

http://dl.dropbox...asks.pdf

If the Sun violently erupts today, as it has in the past, . . .

World leaders, Al Gore, the head of the UN's IPCC and their army of Nobel Prize winning scientists may become charcoal, . . . just like you and me.

They cannot control Earth's heat source - the Sun.

http://arxiv.org/pdf/0905.0704

They control government research funds and managed to manipulate observations and measurements for four decades (1971-2011) to promote the illusion that CO2 causes global climate change.

www.foxnews.com/s...er-fire/

Refusal of world leaders and their "science" advisors to accept reality is at the base of many of society's problems today.

With kind regards,
Oliver K. Manuel
A_Paradox
not rated yet Dec 17, 2011
I have a question: what is the duration of a gamma ray burst? Are we talking minutes, hours, or days?
omatumr
1 / 5 (8) Dec 18, 2011
Initially thought to be an instantaneous burst, some continue to release high energy gamma radiation for much longer periods.

So long as they are far, far away, politicians could use emotions - not logic - to convince the public that world leaders are powerful and control nature.

Only now, as the AGW scare collapses, information is being made public on the ill-tempered pulsar that produced our elements, gave birth to the Solar System, and still controls our fate today.

http://dl.dropbox...asks.pdf

With kind regards,
Oliver K. Manuel
Former NASA Principal
Investigator for Apollo
www.omatumr.com
http://myprofile....anuelo09
omatumr
1 / 5 (8) Dec 18, 2011
Here are twenty (20) historical examples of the way emotions - not rational thought - have been used to convince the public that world leaders are powerful and control Nature.

www.ipa.org.au/pu...c-alarms

In fact, they do NOT!

Al Gore and the UN are totally powerless over the forces that power the Sun, control Earth's climate, and sustain life on Earth:

http://dl.dropbox...asks.pdf

Those who use emotionalism to divert attention away from experimental data and observations identify their masters.
Skepticus
1 / 5 (4) Dec 18, 2011
This is the most glaringly illogic I ever read: "...astronomers can say with certainty that there is no threatening star close enough to hurt Earth." and then: "...Astronomers ESTIMATE that, on average, about one or two supernovae explode each century in our galaxy."

Since when etimates are basic for certainty? For all we know, some bankrupt aliens blow up their owned system to claim insurance!
Another fine example of people talking in stereo. I mean, the top and bottom end at the same time!
omatumr
1 / 5 (7) Dec 18, 2011
In today's broken and fearful world,

1. World leaders spread fear and claim ability to control Nature

www.ipa.org.au/pu...c-alarms

2. Precise rest mass measurements on every atom show:

a.) Neutrons attract protons to make stable atoms
b.) Neutrons repel other neutrons; Neutron-rich atoms are unstable
c.) Protons repel protons even more strongly; Proton-rich atoms are less stable
d.) A benevolent Reality that surrounds and sustains us is in a "Cradle of the Nuclides"

www.amazon.com/Or...06465620

http://dl.dropbox..._Not.pdf

3. The AGW scare will collapse once the public knows that a pulsar produced our elements, gave birth to the Solar System, and still controls our fate today.

http://dl.dropbox...asks.pdf

Best wishes for the Holidays!

Today all is well,
Oliver
omatumr
1 / 5 (6) Dec 18, 2011
The greatest danger today is that world leaders are as frightened as everyone else and may act foolishly in frantic desperation to try to preserve their false illusion of control.
jsdarkdestruction
3.7 / 5 (3) Dec 19, 2011
like i said before oliver-that is a bunch of horseshit. Their is no global conspiracy to hold back your neutron repulsion theory of the sun, whats holding it back is the lack of any evidence not written by you or a friend who used your work as a basis. if thats not the case then you claim old obsolete data supports you when newer data clearly refutes it.
omatumr
1 / 5 (7) Dec 19, 2011
Skeptics of the PCSM model (pulsar core solar model) way want to address observations made on young solar-type stars:

http://adsabs.har...31...69B

Young solar-type stars:

a.) Rotate rapidly
b.) Are magnetically active
c.) Some have magnetic cycles like the 22-yr solar activity cycle

How does an interstellar cloud of H to collapse and perform these feats?

Could it be that young solar-type stars have a pulsar core, like the Sun?

With kind regards,
Oliver K. Manuel
jsdarkdestruction
3 / 5 (2) Dec 21, 2011
How does an interstellar cloud of H to collapse and perform these feats?
gravity
Could it be that young solar-type stars have a pulsar core, like the Sun?
no, absolutely not. the sun does not have a pulsar core.