Science
Metal leaked from interstellar comet Borisov as it passed us in 2020
Gaseous nickel leaked from interstellar comet 2I/Borisov during its brief visit to our solar system two years ago, a new study shows. It sounds like weird behavior for comets, but as related research shows, the ejection of atomic metals may actually be a regular behavior of comets, both locally and across the galaxy.
By adalberto alejandrina4 years ago in Earth
The universe is constantly expanding. In what kind of space is it expanding? Inseparable from the universe is not fast enough
On the earth, most people may not care how big the universe is, because the size of the universe seems to have nothing to do with them, because for them, the earth is already big enough, and it is too big to walk in a lifetime. Finish. Even so, human beings still look up at the deep space under the guidance of their dreams, and this look is really surprising. The universe is too big. The earth where humans live is located in the solar system, and this star system with a radius of one light year is definitely an insurmountable space for today's human beings, although we can launch some spacecraft like "travelers", Let them fly aimlessly out of the solar system, but it definitely can't be regarded as leaving the solar system in the true sense.
By adalberto alejandrina4 years ago in Earth
Alien call? Astronomers suspect radio signals from exoplanets
Although we already have a series of very excellent observation machines and equipment, such as the "China Sky Eye" FAST, the Hubble Space Telescope, and the huge telescopes in Europe that have been basically constructed, and the LeBron James Webb Space Telescope, everyone may be forced to recognize it. The ability of astronomical observation work is really outdated.
By suzanne darlene4 years ago in Earth
Voyager 2, which is 20 billion kilometers away from the earth, sends back signals in the so-called "space"?
On August 20, 1977, NASA's Voyager 2 probe was sent for liftoff on its ascent to the solar system. After traveling 4.1 billion light-years, Voyager 2 reached the limit of the solar system's heliosphere, the tail end of the solar wind, in November 2018. Since then, Voyager 2 has entered interstellar space, where cosmic radiation is stronger than that of the sun.
By tannie rusty4 years ago in Earth
NASA predicts: Asteroid may hit the earth many years later, and its destructive force is unprecedented
In 1994, at a distance of hundreds of millions of kilometers, the Shoemaker-Levy 9 meteorite collided with Jupiter, starting a desperate collision between heaven and earth, which shocked biologists with sweat. The tremendous kinetic energy caused by this impact is equivalent to 2 billion nuclear bombs. Okay, it hit Jupiter, and everyone just sat on the mountain and watched the tiger fight.
By crudden elle4 years ago in Earth
Can today's desolate Mars be regarded as another dead Earth?
5 billion years ago, there was a large mass of nebula matter that slowly condensed together and revolved around the center. Most of this mass of token matter was hydrogen, and there were also some heavy elements.
By daron mychal4 years ago in Earth
Martian settlers seek death? Scientific exploration has repeatedly hit a wall, and behind it is a difficult problem that cannot be explained by science!
There are countless planets in the vast universe, but there are not many planets known to human beings. Mars should be the most popular one besides Earth, because Mars and Earth have very similar characteristics, so people call Mars the twin brother of Earth. It is precisely because of similar characteristics that for a long time, humans have been the best choice for Mars for space immigration. However, in the later exploration process, scientists found that it was not as easy as they imagined, which also troubled scientists for a time. Martian immigration is really suitable ?
By sayre laylah4 years ago in Earth
Europeans and Americans have 206 bones, but Chinese have only 204. Why do Europeans and Americans have more?
Although it is said that Chinese and Europeans belong to two different races, they still cannot escape the structure of primates, so why do Europeans and Americans have two more bones than Chinese, and where do these two bones grow? ?
By sayre laylah4 years ago in Earth
The dead whale appeared in Ningbo, obviously smelly, and has drifted away, will it become a whale fall or a whale explosion?
According to media reports, on the morning of April 28, a fishing boat in Taizhou, Zhejiang Province found a dead body in the waters east of Shipu, Ningbo.
By sayre laylah4 years ago in Earth
4 billion years ago, there were three Earths in the solar system? Scientists have discovered that the birth of human beings is an unrepeatable miracle!
The earth is the only planet where life is born in the entire universe. Humans continue to explore the universe and try to receive signals from extraterrestrial civilizations, but no signs of life have been found on other planets. Could it be that the Earth is the only planet in the universe that harbors life? If so, isn't Earth too lonely? But if other intelligent life exists in the universe, where would they be? We know that life can thrive as long as there is liquid water, moderate temperatures, an atmosphere, and sunlight. Interestingly, scientists found that there were "three earths" in the solar system 4 billion years ago! Then why are we the only ones left? Please look down.
By sayre laylah4 years ago in Earth
The foreign guy in armor wants to experience the feeling of being swallowed by a python
There are many videos of foreigners playing extreme sports on the Internet. These extreme sports are also frightening to watch. I have to say that there are really reasons for the lack of foreigners. In this issue, there is a foreign guy who wants to experience what it feels like to be swallowed by a python, so he is fully armed, wearing thick protective clothing, and carrying various testing equipment. It is to record the various physical signs of his body when he was swallowed by the python.
By sayre laylah4 years ago in Earth
