A scientist who pursues the largest mystery of the universe 'Dark Matter' at 1,800 m underground

In this universe, it is thought that there is a mysterious substance / dark matter (dark matter) that "has invisible but massive". It is dark matter that can not be seen by the eyes and can not be observed even with various equipment but in order to physically explain the movement of the universe, if we do not calculate its mass, the universe itself has been established It will not be there. The state of scientists who have been carrying out research for more than 20 years aiming at the detection of dark matter which is the biggest mystery of the universe is drawn by Netflix documentary series " unknown science ".

The New Hunt for Dark Matter - The Most Unknown | Ep. 2 - YouTube


"Dark matter is the thing human beings are not yet sure about their identity", says David Di Angelo, Philosophy at the University of Milan.

"There is a phenomenon that can not be explained in this universe without a substance that can not be seen by human eyes."

"The particles are passing through the body even when we are talking about this way and we will leave almost no response."

"We are convinced that there is always dark matter, but we have never succeeded in observation"

Visiting Dark Matter's observation facility with Dr. D'Angelo this time is Dr. Jennifer Makarady, a microbiologist at Pennsylvania State University.

The car on which they ride goes into the tunnel which leads deep underground.

Arrived, "Grand Sasso National Laboratory". It is an atomic physics research facility located in the mountain about 100 km east of Rome, and it is made in the basement of a huge rock mass of 1,800 m in thickness.

To eliminate the influence of " cosmic rays " that disturb observation such as dark matter, which is made deep underground. The mountain itself above the facility is used as a filter for cosmic rays, and in this facility it is said that "Cosmic Silence" environment is being created.

"In this, you can hear the sound of the cosmic rays," said Diano Gerlo, who speaks casually like Italians.

Dr. D'Angelo introduced "SABRE" of the dark matter detector that it is still in the prototype stage.

Sodium iodide crystals are installed inside. The identity of dark matter is still unknown, but the elementary particle " Neutralino ", which is considered to be a promising candidate, has the property of emitting blue light when colliding with sodium iodide, separating it from other elements by observing the light with a sensor We aim to detect dark matter by doing.

Dr. D'Angelo explaining his argument to Dr. Makarady, who asks "Do you think dark matter is where?", Answering "Science is not a speculation to speculate".

There are many areas to investigate, and many scientists around the world are doing research to announce "discovery of dark matter".

"It is indeed surprising that there are substances that we do not know yet in this universe."

"Of all the substances in the universe, 85% are still believed to be unobservable by human beings.What we truly have dark matter or there is something else to explain the mystery It is necessary to know whether or not, if it is not the fact that I thought, it is necessary to change my mindset. "

"Human beings are basically curious about wanting to know about the world in which they live"

"The goal of the science of physics I am involved is to spread the boundaries of knowledge one by one to know how this world works, basically physicists basically, anyway I do not think much about "why" and I do not think much about what "can do with it" .. I want to know exactly what the object is purely. "

"Perhaps there is concern that you may find that dark matters do not exist in the end."

"But I do not think it is a tragedy, it's a way for things to progress in the scientific world."

"When a question is resolved, another question is born again from that, but nobody cares about it, because that is fun."

"In the history of humankind, mysteries that have not been elucidated in each era have existed"

"I do not know if the mystery of Dark Matter will be elucidated while I am alive, but perhaps everything will become clear as I become the next generation, but until that time, It will come to appear in the world. "