Science

Is it a coincidence? Why did the satellite pick up the signal again after years of being "lost"?
Previously launched a satellite, was launched more than forty years ago, to now also lost for more than forty years, just two years ago, suddenly transmitted a data signal biologists received this should be very incredible let people happy, according to the biologist's research found, but not happy at all can not afford.
By Roseto4 years ago in Earth
Where does Earth's water come from? Scientists find liquid water in meteorites, water prevalent in solar system
We all know that the Earth has an abundance of liquid water, which is one of the key factors that allows the Earth to nurture life. So, is the water on Earth, is it there itself, or from space?
By Aliser4 years ago in Earth
Why do organisms generally become larger in oxygen-rich environments?
The day before yesterday Hays Wolf Mountain (Wolf Mountain, Hun) had mentioned that the current atmospheric oxygen content of the Earth is only 21%, but this is not the era of the highest atmospheric oxygen content in the geological history of the Earth. The era with the highest oxygen content in the Earth's geological history is thought to have occupied 27% to 28% of the atmospheric content of oxygen, which is more than 30% of the oxygen content above today's sea level. There are thought to have been two possible peaks of this oxygen enrichment. One occurred in the Carboniferous period between 360 million and 300 million years ago. Plants at this time grew particularly large because of the oxygen enrichment. Ferns were often tens to hundreds of meters tall. The death of these giant plants produced a huge accumulation, which is the largest source of today's coal strata, hence the name of this era, the Carboniferous. Another peak of oxygen enrichment may have occurred 200 to 140 million years ago in the Jurassic period, when the world was covered with giant reptiles, becoming the most prosperous era of dinosaurs. Therefore, once the Earth was enriched with oxygen, both plants and animals would increase in size massively in parallel. This has been the basic consensus. But the problem is that
By Carlo Phil4 years ago in Earth
Science: Curse Or Blessing?
The conceptual satisfaction of a person is achieved through religion, philosophy and finer literature. However the practical satisfaction of human needs is fulfilled through technology, basic and advanced. Science is the knowledge that bridges the gap between conceptual and practical fulfillment of diverse human needs. In addition, science gives authenticity to religious, philosophical, literary and technological works. It rectifies the deficiencies of all. Science may prove a good and faithful servant if we use it wisely and carefully.
By k eleanor4 years ago in Earth
What exactly does "Mach" mean, and how many kilometers can you fly at Mach 15 for one hour?
Mach Mach is a unit of physics that indicates the ratio of the speed of an object to the speed of sound, and this speed of sound is the speed of sound propagation in the air at 340 m/s.
By Bettye Lutz4 years ago in Earth
What kind of people have the ability to open the eyes of heaven?
There is a legend that "the sky opened its eyes", referring to the sudden appearance of mysterious bright light in the sky. As the Yuan Dynasty Yao Tongshou "Lejiao whispers" cloud: "when the dawn star is still under the tree, suddenly the southwest sky cracked several feet, light flames like a fierce fire, shining all over the field. At that time, the village dogs were barking and the birds were flying. Yu Shizi looked at its crack, astonished, in the recovery of great clarity. If it is the smelter land funds. Hours together the man who operated the boat said to Yu: the sky opened its eyes. Some scientists say it is "aurora borealis", but the aurora borealis will only appear in the high latitude areas near the North and South Poles, many ancient books on the record of the opening of the eyes of the sky, all occurring in low latitude areas, which is a supernormal phenomenon, can not be explained by the aurora borealis.
By Baudamolova4 years ago in Earth
Humans can create a clone, but not a real biological cell? Why?
Since the establishment of modern science in the period of Galileo-Copernicus, human beings have developed rapidly in the past three hundred years, leading the behavior of human civilization to a new aspect ratio. well known. The wonderful magic of science depends on its ability to transform a civilized behavior. In the ancient times when science had not yet germinated, the development trend of human civilization behavior was trapped in illness and starvation. After the advent of science, agriculture, animal husbandry and diagnosis and treatment. With milestone development, the global population is rapidly increasing.
By tannie rusty4 years ago in Earth
What is the origin of Earth's magnetic field? Scientists tell its past and present
In fact, the beautiful earth hides many secrets. For example, under the protection of the atmosphere, human beings can live comfortably, and it is like a human mother who protects human beings all the time.
By tannie rusty4 years ago in Earth
Time travel? Humans cannot go back to the past because paradoxes will occur
Einstein was an outstanding biologist, he put forward many unfathomable basic theories, such as quantum theory, photon quantum hypothesis, photoelectric effect, etc. He also has many achievements in the nuclear industry, naturally, most famously or quantum theory. Until now, it has still become a classic basic theoretical theory. Many people feel that Einstein's brain development level is the greatest, so he can come up with this outstanding basic theory.
By crudden elle4 years ago in Earth
Humans have discovered 5.5 million species of insects on the earth, and they are now "larger" than humans?
Among the various creatures on earth, there is a creature that is very close to humans, and they are insects. Insects are distributed in every corner of nature and can be found in tree trunks, soil, and air. Furthermore, they are widely distributed in the human world, such as mosquitoes, ants, cockroaches, etc. Some people are afraid of insects. This fear often comes from childhood. It could be from a terrifying experience, or it could be frightened by the strange shape and the sheer number of insects. Compared to insects, humans are inferior to insects in number and weight.
By crudden elle4 years ago in Earth
Why is the Earth's magnetic field splitting?
Some people believe that the appearance of life on Earth was an accidental event, but others believe that it was the result of a combination of various aspects. If the emergence of the first life on Earth was accidental, the fact that it continued to survive and reproduce on Earth indicates that the natural environmental conditions on Earth are suitable for life to survive. Compared with other planets, the Earth has many environmental advantages, such as a suitable atmosphere, the right temperature, liquid water flow, etc.
By Grady Shah4 years ago in Earth
The solar system was designed, and human beings are "prisoners" who are "imprisoned" in the solar system
Some biologists have always believed that the solar system was designed by advanced civilizations. Such a name appears because the solar system is different from other planets. In other planets, there are all two or three planets, but in the solar system there is only one sun light. .
By daron mychal4 years ago in Earth