“There are only two possibilities, either we are alone in the universe, or we are not, both things are equally terrifying.”
So says British science fiction writer Arthur S. Clarke.
Stories of aliens and the invasion of Earth have long been circulated in popular culture from numerous films and novels. But this fascination with the possibility of extraterrestrial beings is not new.
From the caves of ancient civilizations to the Greek philosophers and thinkers of the eighteenth century, the question has not disappeared from the minds of mankind.
Searching for another life
The first actual steps in the scientific search for other beings began when Russia launched the first satellite in 1957 to orbit the Earth, in light of the Cold War between the Soviet Union and the United States and the space race between the two superpowers.
In the seventies, with the arrival of Mars, the question was more pressing, but we have not found a satisfactory answer until now.
In 1977, the Voyager 1 and Voyager 2 probes left Earth, embarking on an endless journey into space.
Each holds two golden cylinders with welcome messages in different languages, songs and hymns from different cultures, and pictures of life on Earth of extraterrestrial beings that the two probes may pass on their way.
The two Voyager probes exited the solar system in 2018, and their journeys into deep space continue, but no one has intercepted them.
Planet Earth, despite the thrust of life on it, is just a speck of dust in an endless vast space.
In this space there are hundreds of billions of galaxies, and an infinite number of stars and planets revolving around them. These planets are as far from their star as the Earth is from the sun.
In 2009, NASA launched the “Kepler Mission”, a project based on a telescope of the same name, which launched into space to search for planets similar to Earth, and with the same conditions that would qualify for life, of a rocky nature, and a suitable temperature for the presence of water.
Kepler has discovered thousands of earth-like exoplanets, and other telescopes have discovered thousands of planets likely to harbor life.
But these planets that we can see with a telescope are actually very far away.
Dr. says. Mashhour Al-Wardat, Professor of Physics at the Sharjah Academy of Space Sciences, said that the closest star similar to the Sun is “four light-years away” from Earth. “We are talking about a spacious space. If we reach something, we will only receive light.”
A light year, despite its name, is a unit of distance, not time.
After a star is four light-years away from Earth, this means that light at its speed, which is the fastest possible physical speed, needs four years to reach us. When we look at this star, what we see is his picture from four years ago and not his picture now.
If we assume that there is a planet a thousand light years away from Earth, and if we also assume that there is life on this planet, then those who look at us from there will see the Earth in the eleventh century, and if they send us a message at the speed of light, it will reach us in the year 3022.
Despite this, there are thousands of recorded allegations of seeing UFOs. In April 2020, the Pentagon released three videos of what it described as “unintelligible space phenomena” that look like UFOs.
The BBC spoke to Alex Dietrich, a US Army Air Navigator, who captured one of these clips while working.
“The object was flying so fast, so randomly, we couldn’t predict which direction it was going to turn, and we couldn’t understand how it was being driven like that, and where its thrust energy came from,” Dietrich says.
The US Department of Defense confirmed the authenticity of Alex’s video and released dozens of similar clips that were previously kept secret, and now the US Congress is debating the matter.
Andrea Carson, a member of the US Congress, said that “uncomprehensible space phenomena can be a national threat, and they should be dealt with in this way.”
But if there are aliens, what do they want from us?
In 1977, scientists received a strange signal from an unknown place in space. The so-called “Wow” signal has not been interpreted until now, but many scientists believed that it might be a message from other objects, prompting millions to pump millions to build telescopes that send signals and wait for others. from far space.
The last and most advanced of these telescopes is the James Webb Space Telescope, the giant and most advanced to date.
In July of this year, James Webb sent the first true color images from the past of the thousands of galaxies, stars and planets orbiting them, with color images showing space like we’ve never seen before.
James Webb Space Telescope: What exactly do we see in the new NASA images and why is it important?
Scientists expect that the next ten years will witness the greatest discoveries in the field of space and may answer our call to a life other than our own.
Now we are witnessing a rapid scientific and technological development that we have not seen before. Scientists expect that the next ten years will witness the greatest discoveries in the field of space. Perhaps you will answer our call to a life other than ours.