Although human civilization and science have progressed so rapidly, yet some things still leave questions and puzzles. The following are the mysteries compiled by the LiveSience site, which until now still can not be solved by the 'scalpel' of pure science.
What happens during an earthquake#
Know what happens when an earthquake happens. Whereas earthquakes occur in the belly of the planet earth, just under our own feet.
Until now, experts can only explain where the earthquake came from and what the fault was involved in the earthquake event, or maybe just predict how long aftershocks will take place.
But until now they can not exactly explain what happened inside the earth when the earthquake took place. The nature and behavior of forces that make the fault continue to move until then finally the earthquake until now still a mystery. "The problem of shifting in an earthquake is one of the most basic things of all earth science.
But that's still a 30-year-old mystery story, which has not been solved, "said Tom Heaton, a geophysicist from Caltech.
Who are you#
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The natural consciousness that humans have over the years, is still confusing for psychologists and scientists in the cognitive field. Part of the answer to the basic question above there is a simple answer: something that triggers us to do something, already integrates with human neural network.
Although we think that what we do is free will, yet every work done by humans is also affected by the unconscious process and the environment. And how do we make a conscious decision that makes humans have a mind other than a soul? Well this is still a mystery.
How life can happen on earth#
Humans have found preliminary evidence about the existence of simple germ life on earth since about 3 billion years ago.
However, how then the initial events of the lives of other beings on earth, until now unknown.
"A lot of theories from the origin of life are offered, but they are very difficult to accept and prove," says Diana Northup, Cave Biologist at the University of New Mexico.
How does the brain work#
Until now, no one can explain how the human brain works. With billions of neurons and each neuron has thousands of connections, the brain is very difficult to examine.
"We all think that we can understand our brains, at least through our own experience.
In fact, our subjective experience is a minimal guide to determine how the brain works, "said Scott Huettel, an expert from the Center for Cognitive Neuroscience at Duke University.
Until now researchers have not been able to determine how neurons form a functional network when humans are learning, remembering, or doing other activities, including when seeing, hearing, moving, or when in love.
Where are the other parts of the universe#
Humans have many limitations when trying to research the universe. "It's also called the dark side of the universe," says Michael Turner, a cosmologist at the University of Chicago.
According to him the greatest mystery of the universe is dark matter and dark energy.
Although researchers are trying hard to explore the deepest extraterrestrial spaces and into the depths of the earth, it is estimated that only 4 percent of the matter and energy are found. While 96 percent of others are still unknown.
What causes gravity#
Although gravity has been studied since Newtonian times, this field is still very little known by humans.
Gravity can not be explained by the standard physics mode. Theorists believe gravity may have something to do with tiny massless particles called gravitons that give rise to the force of gravity.
"Gravity is entirely different from other styles that can be described in standard models," says Mark Jackson, theoretical physicist from Fermilab in Illinois USA. "As you work on the calculations of small gravitational interactions, you will get a nasty answer. Mathematics simply can not work, "he said.
Is there any Theory of Everything#
Experts usually have pretty good standard models for defining everything in the universe down to the smallest particles, from magnetism to the atoms that make up and how they can stay stable.
This standard model views the particles as very small dots, some of which contain a basic force.
The only drawback of the standard model, however, is its failure to calculate gravity and enormous energy.
Well, if there is a theory that can consistently include these two things into the modeling, then the universal physics theory will really be realized. Unfortunately, many researchers think it will never be achieved.
Does Alien really exist#
It is logical to assume that there is life other than earth. Therefore, the elements needed for life are widely distributed in the universe.
In addition, the solar system is similar to our solar system is also found in space. "So at least, it's possible that there's another life there," says Jill Tarter, Director of the Center for SETI Research in California.
How is the universe created#
The theory of the big bang that started the universe since 13.7 billion years ago is seen as a plausible theory, although not yet directly tested.
In this theory, everything begins with a small aerial space and then expands and grows larger by the process of inflation (pumping).
"Until now we do not know what causes inflation, or even whether it is the correct theory or not," said Eric Agol, an astrophysicist at the University of Washington.
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