In the almost boring days, the most important thing to support Hua Feng is the unreserved support of Yunmeng by his side, he knows that for the sake of his family, for the sake of many beautiful things in this world, he has to work hard to support.

I will work harder! Hua Feng will silently say this to himself in his heart every day.

It inherits all the achievements of the Big Bang theory and modern cosmology, explains a series of problems that the Big Bang theory cannot explain, including why the temperature of the universe is so average, why space is so flat, why no high-energy remnants such as magnetic monopoles have been found, and so on, and it also makes five testable predictions, four of which have been confirmed. The only prediction that has not been confirmed, and is difficult to confirm, is the multiverse.

The inflation theory states that inflation causes space to expand exponentially and rapidly. This would explain why our universe is so average and so huge. After the inflation ended, our universe was filled with matter and radiation, which is everything we saw in the Big Bang. Our universe today was formed by full inflation. But according to the same theory, it can be deduced that there may still be many places around where inflation has ended. This phenomenon that exists in theory is also known as "permanent inflation".

There are three criteria for judging whether a theory is mature and scientific. They are:

The ability to reproduce the results of the original theory, the ability to explain the results that contradict the original theory, and the ability to make new, testable predictions.

Since it cannot be verified, nor can it be predicted, how it will be verified, the multiverse is not a scientific theory, nor a scientific hypothesis, but a personal hypothesis. The multiverse theory is not a scientific theory in itself. It is actually an inference based on the currently known laws of physics.

For the universe we live in, the multiverse theory doesn't play much of an explanatory role. It doesn't solve the problems we are currently facing. Worst of all, it can't provide us with any predictions that we can test.

This means, first of all, that if our understanding of the universe and its history is correct, then the universe may actually exist. But the Big Bang that produced these universes has nothing to do with our universe. But at the same time, it's all surreal. Even theoretically, it cannot be tested. Unless we reproduce cosmic inflation and then send the observer to a different inflationary zone.

The multiverse theory is always a corollary of physics. It may be an inevitable inference, but it cannot be called science until it is tested. In fact, we may never be able to test it. This is a theoretical conjecture that makes sense, but it is not a scientific theory. And because the universe has set limits for us, the multiverse may never be a scientific theory. It belongs to a kind of physics-based "metaphysics". We can learn the information inside this universe in a scientific way, but this universe is actually limited.

For example, many people will be interested in "the best of the universe." ”

The Coldest Place in the Universe A recent study suggests that the Pullback Bar Nebula may be the coldest place in the universe, with a temperature of minus 272 degrees Celsius. The Pullback Bar Nebula is located 5,000 light-years from Earth.

Kepler-70b, the hottest planet in the universe, is the hottest exoplanet, with temperatures of up to 7,000 degrees Celsius, and its orbit is also very close to its star, shorter than the distance between Mercury and the Sun.

The coldest planet in the universe, OGLE-BLG-390L, is the coldest planet ever discovered, with a mass 5 times that of Earth, considered a rocky planet, and it is also one of the farthest planets from Earth, about 28,000 light-years away. Its surface temperature is only minus 220 °C, which is below the boiling point of liquid nitrogen and close to absolute zero (-273.15 °C).

UY, the largest star in the universe, is the largest known star and is a red supergiant located in the constellation Shield. The radius is 1708 times the radius of the sun, which means that 1708 suns are lined up in a row. It is located about 9,500 light-years from Earth.

VFTS 102, the fastest spinning star in the universe, is the fastest spinning supermassive star to date, with its equatorial region orbiting its axis at a high speed of 600 kilometers per second, and this high rotation rate almost tears the star apart due to centrifugal force. It is very hot, a highly luminous star, 100,000 times brighter than the Sun, and is located in the Spider Nebula in the Large Magellanic Cloud.

The smallest particle in the universe is known to be quarks. The new unproven theory suggests that superstrings (not yet a scientific theory), singularities, and space bubbles (not yet a scientific theory) are all about the size of Planck's scale. Planck scale is 1.6 x 10^-35 meters.

The Planck scale is considered to represent the theoretical lower bound of the smallest measurable scale. According to uncertainty theory, no instrument can measure smaller scales, because matter is probabilistic and uncertain within that range. This scale is also considered to be the dividing boundary between general relativity and quantum mechanics. Scientists believe that probably all the smallest matter in the universe is roughly Planck-length size.

The fastest speed of information transmission in the universe has shown that no matter how fast information is transmitted, it cannot travel faster than the speed of light. This also suggests that Einstein's theory of the limit of speed is unassailable.

Quantum entanglement technology is an encryption technology for the secure transmission of information, which has nothing to do with the speed of light. Despite knowing that these particles "communicate" with each other at thousands of times the speed of light, we are unable to use this connection to control and transmit information at such a rapid speed. Thus Einstein's rule that nothing can move faster than the speed of light still holds.

"Information" refers to any signal that can act on an object or system, for example, a pulse of light can turn on an instrument. The researchers propose that even if some of the most advanced photons in a pulsed beam are traveling faster than the speed of light, the pulses will only act once the majority of the beam's photon clusters have arrived. This means that leading-edge tachyon photons cannot convey any information. It doesn't make sense to be faster than the speed of light that can't transmit information, for example, space expansion is faster than light but can't transmit information.

The brightest quasar in the universe, SDSS J0100+2802, is the largest black hole mass and luminosity of any known distant quasar. Its luminosity is 430 trillion times that of the sun and it is 12.8 billion light-years away from Earth.

Its central black hole has a mass of about 12 billion solar masses, formed about 900 million years after the Big Bang, and is the quasar with the highest luminosity and the largest black hole mass among the stars in the distant universe known to date. By comparison, the black hole at the center of the Milky Way has a mass equivalent to only 3 million suns. A quasar is a dazzling object formed by the black hole at its center violently devouring the surrounding material.

The largest planet ever observed in the universe, KR b in the constellation Fly, is the largest planet observed (also a brown dwarf), with a radius 6.8 times that of the "giant" Jupiter of the solar system and 320 light-years from Earth. With a mass of 20MJ, it is the only newborn planet to be observed.

The fastest planet in the universe and the fastest planet is SWEEPS-10, which is 1.19 million kilometers away from the main star, three times the distance between the Earth and the Moon, which means that the planet takes only 10 hours to rotate in one rotation is equivalent to 10 hours on Earth.

The heaviest black hole in the universe, OJ 287, is the heaviest invisible black hole ever observed, with a mass 18 billion times that of the Sun.

The brightest space target in the universe, the persistent gamma-ray burst GRB 080319B, which erupted in March 2008 and can be observed on the ground with the naked eye, is 10 million times brighter than an ordinary galaxy, yet it is 7.5 billion light-years away from Earth.

The fastest fugitive star in the universe, HE 0437-5439, is speeding through the galaxy at 1.6 million miles (2.57 million kilometers) per hour.

The busiest galaxy in the universe astronomers have observed that galaxy GOODS 850-5 is the busiest galaxy, with 4,000 stars per year at the beginning of the universe's formation, while the Milky Way produces only 4 stars per year.

The most distant galaxy in the universe A 13 billion year old galaxy was formed 700 million years after the Big Bang, but this most distant ray of light has only yet reached Earth, and the bright, star-forming phase we see today is the early stage of this galaxy.

The smallest black hole in the universe uses the quasi-periodic vibrational (QPO) method, and astronomers have discovered that the smallest black hole to date, which is only 3.8 times the mass of the Sun, is located in the Milky Way's binary star XTE J1650-500.

The largest and heaviest quasar in the universe, this is an extremely bright, wide-absorption-line, intensely radio quasar. It's called Ton 618, and its event horizon is 384 billion kilometers, with a mass of 66 billion times the mass of the Sun, far away in the constellation Canis 10.4 billion light-years. When you think of this, you get the impression that Sagittarius A* (the black hole at the center of the Milky Way) is very small.

The most hellish planet in the universe HD 149026b is a charcoal-dark world that absorbs a lot of radiant light from very neighboring stars and brings its surface to a temperature of 3700 Fahrenheit, well above the boiling point.

The brightest supernova in the universe, 2005ap, is 100 billion times brighter than the Sun and 300 times brighter than ordinary supernovae, but don't worry, this supernova is 4.7 billion light-years away from Earth.

The theoretical maximum temperature in the universe emits decreasing wavelengths (equivalent to increasing frequency and increasing energy) when an object reaches a superheated temperature. Theoretically, there is a lower limit to the wavelength of radiation (as opposed to an upper limit on energy). Planck's law states that energy cannot be continuously increased, otherwise unimaginable rays will be generated. The limit point is around 1.416833(85)x10^32K, which is commonly known as Planck temperature.