【Selected Readings】

Race against photons! 200,000 years is only 1 centimeter behind! What exactly is the "forehead drop" particle?

We all know that the speed of light in a vacuum (m/s) is the ultimate speed in the universe, and the speed of motion of any object with a stationary mass can only be infinitely close to it, but it cannot reach or exceed the speed of light.

If a cosmic "race" is held, in which photons and physical particles such as neutrons, protons, electrons, and atoms are involved, then the winner will undoubtedly belong to photons.

There is such a mysterious particle, the speed of which reaches 9999999999999999951% of the speed of light! If it starts at the same time as the photon, then the photon can lead by 1 centimeter during the New Year!

It is the "Oh-My-God particle" that puzzles scientists.

The Oh-My-God particle is a type of high-energy cosmic ray, and its energy is extremely high, and it is estimated that the energy of an Oh-My-God particle is as high as (3.2±0., or about 51 joules).

is 20 million times the strongest electromagnetic radiation emitted by extragalactic objects,

is times the energy of visible light photons,

That's 40 million times the energy of high-energy protons made by particle accelerators!

An Oh-My-God particle is equivalent to a baseball with a speed of 94 kilometers per hour and a mass of 142 grams!

With such a huge energy "baseball" flying around the universe, it's no wonder that scientists exclaim, "Oh."

My

God".

In fact, since the Y-GOD particle was first detected, only 72 such phenomena have been recorded so far.

The energy of these ultra-energetic particles is generally reached, compared to only 10 for ordinary cosmic ray particles

MeV

to 10

GeV。

With the help of observations from the Gamma-ray Telescope Array, the researchers found a temperature anomaly in the 20-degree range in the direction of Ursa Major, which may be the true source of Oh-My-God particles.

The Oh-My-God particle is mysterious, but it's nowhere near as powerful as the Planck particle.

Planck particle is a kind of particle hypothesized by scientists to study the Planck scale, its radius is only proton, the mass is times that of protons, the energy is 40 million times higher than that of Oh-My-God particles, and the difference between the speed of light and the speed of light is 1/!

It's the equivalent of a miniature black hole traveling at nearly the speed of light!

If Planck particles and photons were to compete in a cosmic race, it would take ^20 years for poor photons to be 1 centimeter ahead of Planck particles! Our universe is 13.8 billion years old, which is ^10 times the current age of the universe - which means that the winner of this game may have to wait until the end of the universe!

Unfortunately, according to the prediction of the famous physicist Stephen Hawking, Planck particles exist for a very short time, and even if they are generated, they will disappear without a trace within seconds due to Hawking radiation.

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