Science
If the sun suddenly disappears
What would happen to the Earth if the sun suddenly disappeared? The answer is, of course, the Earth will undergo great changes, but at the moment of the disappearance of the sun, the Earth will not immediately change, because the speed of propagation of the sun's light and gravity is the speed of light, about 300,000 kilometers per second, and the average distance between the Earth and the sun is about 150 million kilometers, so in about 500 seconds, the Earth's great changes will begin, and from then on the prelude to the difficult survival of mankind.
By Robert Jack3 years ago in Earth
The world we live in could be a virtual broadcast
Our human perception of the outside world is the result of our brain's processing of various bioelectric signals, for example, our visual system will convert the external light into bioelectric signals, and then these signals will be transmitted to the brain, after the brain's processing, we "see" the external situation, and similarly, our Hearing, touch, smell, and taste are also produced in this way.
By Robert Jack3 years ago in Earth
Gold can be extracted from corn
Gold, in many ways, is an existence unmatched by anything else. In the beginning, the main role of gold was to decorate, and its great density and lustrous appearance made it a sought-after object; when gold appeared in the form of money, it became the most valuable existence.
By Karen Gillanah3 years ago in Earth
How scary is Japan's Mount Fuji
Mount Fuji in Japan, is a world-famous scenic spot and is also an active volcano, recently, there is news that Mount Fuji seems to be a bit stupid, which undoubtedly triggered people's concern, then Mount Fuji in the end how scary? If Mount Fuji erupts, how serious are the consequences? Let's talk about this topic below.
By Robert Jack3 years ago in Earth
The nature of tomatoes has changed
Tomatoes are very common in life, whether fried or raw very suitable, and because of their whitening and antioxidant effect, but in recent years, more and more people can not help but feel that tomatoes have not been delicious in the past, why is this?
By Karen Gillanah3 years ago in Earth
Why no advanced civilizations have visited Earth
The Earth was born about 4.55 billion years ago, and over a long period, life on Earth has gone through a process from nothing to something, from simple to complex, and finally evolved into humans with higher intelligence.
By Robert Jack3 years ago in Earth
Samsara IV before it became dark
Every shining star in the universe will one day go out, and its "lifespan" is closely related to its mass, the more massive the star, the shorter its "lifespan". For example, the "lifetime" of a Proxima star is about 12.2% of the Sun's mass, and its "lifetime" can be trillions of years, while the Sun's "lifetime" is only about 10 billion years, and the "lifetime" of stars that are much larger than the Sun is even shorter.
By Robert Jack3 years ago in Earth
"Interstellar Visitor" Oromo
Since the advent of the era of peaceful development, mankind has been exploring space for decades. Although the knowledge about space is still insignificant in the vastness of the universe, some information about the moon, the sun, and the solar system is available. However, some information about the Moon, the Sun, and the solar system has gradually become clear.
By Karen Gillanah3 years ago in Earth
10 Fascinating Mysteries Involving Spiders
10 Blue Tarantulas There are more than 850 known species of tarantulas worldwide. Some can shoot excrement as a form of defense, while others can grow to be as large as a human face. Then there are those that are bright blue in color for no apparent reason. Experts believe that the hue blue has a significant function. They "do not yet know what that [particular] role is," though. The most likely theory relates to sexual selection. Scientists hypothesize that the tarantulas' bright hue aids in luring prospective mates. However, Bor-Kai Hsiung of the University of Akron argues that this theory is unlikely to be accurate because tarantulas have extremely weak eyesight despite having eight eyes.
By indika sampath3 years ago in Earth
Solar surface near 6000°C
Even though autumn has recently started, the heat has not been kind to us at all. This year, since the beginning of summer, the phenomenon of high temperature will continue to produce, 40 ℃ can not compete for the top ten "hot" cities; heat stroke disease let us know that the original "heat death" is not an exaggerated approach.
By Karen Gillanah3 years ago in Earth
How empty the universe is
I believe that we all know that the universe we live in is very empty, but if you ask, how empty is the universe? It is estimated that many people have no specific concept the universe is so empty that it is likely to be more than you can imagine. To illustrate how empty the universe is, we might as well start with the Earth and the Moon, where we would normally imagine the Earth-Moon system as follows.
By Robert Jack3 years ago in Earth
