“Exploring the Possibility of Extraterrestrial Life: A Fun and Accessible Guide for All”

2023-04-29 04:00:00

The last remaining blue ocean universe. The United States, Russia, China, and India have opened their eyes to the value of space early on and are pioneering that space. Korea is also jumping into space development in earnest by launching a satellite launch rocket made with its own technology and establishing the ‘Aerospace Administration’. We are trying to tell the story of the vast and vast world of the unknown universe in a fun way so that anyone, from children to adults, can easily understand.

A scene from the movie ‘ET’ depicting the encounter and friendship between aliens and earth boys.

Regardless of whether or not you are interested in space, everyone must have wondered, ‘Are there aliens?’ This is a concern of scientists and one of the great concerns of mankind.

Astronomers refer to aliens as ‘extraterrestrials’. If life exists on planets or satellites other than Earth, it is impossible to know whether it will be humans like humans, microorganisms like bacteria, or beasts like dogs and cats. .

In relation to extraterrestrial life, it is often asked, ‘Do you believe in aliens?’, but alien life is not an object of faith like faith. This is an area that requires a scientific approach.

Then, what do space scientists who study the universe think regarding extraterrestrial life? First of all, to talk regarding the conclusion, scientists believe that alien life exists and are looking for them.

For a long time, even among scientists, opinions on whether or not extraterrestrial life exists have been divided. Then, it was not so long ago, in the 1900s, that scientists concluded that there was extraterrestrial life. They came to a late conclusion regarding the existence of extraterrestrial life because they needed a scientific basis.

The National Aeronautics and Space Administration (NASA) rover Curiosity is conducting activities to search for signs of life on Mars. photo credit = screw

Even if you haven’t met extraterrestrial life in person, the data that there is a possibility is important in the scientific community. The reason why scientists believe that extraterrestrial life exists is from knowing the size of the universe.

There are 200 to 400 billion stellar systems (solar systems) like our solar system in the Milky Way, to which the Earth belongs, and these galaxies amount to hundreds of billions in the currently observable universe. In addition, planets such as Earth and Mars, and satellites such as the moon have a ‘year’ unit or more beyond the ‘longitude’ unit in the universe.

Even mathematical calculations alone, it makes no sense that there is life only on Earth. Carl Sagan, one of the greatest astronomers of our time, was so convinced of the existence of extraterrestrial life that he said, “It is a huge waste of space that only Earth has life in the universe.”

In this way, experts who study the universe no longer doubt the existence of extraterrestrial life. The question is whether we can directly confirm the existence of extraterrestrial life and interact with them. In response, scientists are putting a lot of effort into finding extraterrestrial life, and we will find out in the next article what kind of efforts our humanity is making to encounter aliens.

1682751145
#life #exist #Earth #universe김정욱의 #별별이야기16 #Seoul #Economic #Daily