Explanation of what the biggest explosion phenomenon of the universe "gamma ray burst" is in the movie

ByEuropean Southern Observatory

It is said to be the most magnificent physical phenomenon in the field of astronomy "Gamma ray burst(GRB) ", what kind of phenomenon affects humans human beings Zakkuri easy to understand movie"Death From Space - Gamma-Ray Bursts Explained"Is published on YouTube.

Death From Space - Gamma-Ray Bursts Explained - YouTube


The stars that exist abundantly tens of thousands of light years


What if we were to collect those energies and make the most powerful weapons in the universe?


Even without creating such a terrible powerful weapon, there is a physical phenomenon with similar power. This is the theme "Gamma ray burst".


In the first place, what is "gamma ray" in the first place? Gamma rays areElectromagnetic radiationIt is a kind of electromagnetic waves carrying energy.


Visible light (visible light) is also a type of electromagnetic wave.


When electromagnetic waves are arranged from those with low energy ......


Micro waves used in radio waves used for radio and microwave ovens


Visible light to infrared


There are ultraviolet rays and X rays, and gamma rays are higher energy electromagnetic waves than those.


Gamma rays are very powerful electromagnetic waves, and one gamma ray photon is more powerful than one million visible light.


Also, since gamma rays are also ionizing radiation ......


It is also possible to destroy atomic bonds.



This is a very dangerous characteristic, destroying the structure required for living things.



Although it is such a dangerous gamma ray, since the earth has an ozone layer, gamma rays flying from outer space do not fall directly on the ground.


"Gamma ray burst" is that gamma rays are emitted like a flash over several seconds to several hours. The gamma ray burst is the first physical phenomenon sensed by the satellite that the US was using to monitor the nuclear test of the Soviet Union during the Cold War. As a result of observing the radiation by the satellite to sense the radiation caused by the nuclear explosion released from the ground, as a result of sensing the mysterious radiation flying from space, the existence of the gamma ray burst became clear.


This is the only scientific major discovery due to spy activity.


This has led to the addition of a new perspective to the eyes that astronomers turn towards the universe.



Although it is a gamma ray burst which was enveloped in a mystery for more than 30 years, the source of gamma rays is finally found at the place 6 billion light years away.


Considering from this distance, the energy of the gamma ray burst is surprising, it seems that more energy than 1 sun is generated in 1 second. This is because the gamma ray burst is said to be "the most spectacular physical phenomenon in the universe".


So why is there a phenomenon called gamma ray burst with the most destructive power in the universe?


The occurrence of gamma ray bursts is also the moment of the creation of new celestial bodies. There are two types of gamma ray bursts, each having different sources.


One of the sources is supernova explosion.


A gamma ray burst occurs and a black hole can be formed.


Another source is the moment when two neutron stars merge.


After continuing to emit gravity waves for millions of years, neutron star gradually approaches ... ...


When you hit it ...


You can create a black hole.


There is a gas of remnants of the magnetized star around the black hole, and when it rotates to create a magnetic field ......


Hot particles are emitted from the center almost at the speed of light. This is another moment of occurrence of another gamma ray burst.


The explosion usually diffuses, but the gamma rays emitted when the neutron stars merge are concentrated so that they reach more distant.


Gamma rays generated by gamma ray burst etc. are also falling on the earth.


Fermi gamma ray Space TelescopeAccording to, it seems that it is being observed about once a day. However, most of them seem to be harmless.


The reason is that most gamma rays come from outside the galaxy where the Earth exists.



However, if a gamma ray burst occurs at a distance of several light years from the earth ......


At least half of the earth is burned round.


Even if it occurs farther than that, there is enough danger.


When gamma ray burst occurs several thousand light years ahead, gamma rays gradually diffuse ... ...


It may also affect the entire solar system.


The ozone layer protects the creatures on the earth from the sun ... ...


When a gamma ray burst occurs at a distance of several thousand light years and falls on the earth, the ozone layer is destroyed ......


The earth will be burned to the sun.


The ozone layer will take several years to regenerate, so creatures on the planet will die.


In fact, it is possible that these things have happened in the past.


450 million years agoOrdovician, 85% of marine life has been extinctMass extinctionIt may be due to gamma ray burst.



Moreover, it is the unconfirmed living things in the universe ...


It may be because creatures in the universe have continued extinction due to gamma ray bursts.


From this perspective, there is also the theory that life can exist only in 10% of galaxies in the whole.


Is there a possibility that humankind will encounter gamma ray bursts? The probability of a gamma ray burst occurring in a galaxy is about once in 1000 years, which must occur near the earth and hit the earth. In addition, since gamma rays are light speed, there is no way to know in advance, even if they are headed for it is said to be the moment of death.