A few MIT researchers have proposed a radical method to make our presence known in the universe.
In a new feasibility study, the team says it could be possible to use laser technology as a beacon to attract the attention of extraterrestrial astronomers, like a portal painting on a planetary scale.
With the help of a laser focused by a huge telescope, the researchers say that this & # 39; door light & # 39; up to 20,000 light-years away.
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Researchers have discovered that it could be possible to use laser technology as a beacon to attract the attention of extraterrestrial astronomers, like a portal painting on a planetary scale. Artist & # 39; s impression pictured
In a paper published in the Astrophysical Journal, the MIT team describes how a powerful 1 to 2 megawatt laser can be directed into space via a 30 to 45 meter telescope to create a detectable beacon.
With this configuration, the infrared radiation of the system would be strong enough to distinguish an intelligent species from the sun.
Once picked up by extraterrestrial beings in a nearby system, we could also use this to send short messages, the researchers say.
& # 39; If we were to successfully close a handshake and start communicating, we could flash a message with a data rate of about a few hundred bits per second, which would be there within a few years, "says author James Clark, a graduate student in the Aerospace Engineering department at MIT.
According to the team, the system can be made with existing technology and tools that can be developed soon.
& # 39; This would be a challenging project, but not impossible, & # 39; says Clark.
The types of lasers and telescopes that are being built today can produce a detectable signal so that an astronomer can take one look at our star and immediately see something unusual in its spectrum.
I do not know if intelligent beings around the sun would be their first guess, but it would certainly attract even more attention. & # 39;
A few MIT researchers have proposed a radical method to make our presence known in the universe. The ESO 3.6-meter telescope at the La Silla Observatory in Chile, with images of the stars Proxima Centauri, is shown
The researcher studied different possibilities before eventually landing on the two configurations that would work best for the conceptual design.
A 2 megawatt laser that shone through a 30-meter telescope would produce a signal that was clearly visible in Proxima Centauri b, which is about 4 light-years away.
And a 1 megawatt laser that shone through a 45-meter telescope would be easily detectable from the Trappist-1 system at a distance of 40 light-years.
According to Clark, both would be detectable up to 20,000 light years away.
Such a system, however, would entail risks & # 39; s.
A 1-megawatt laser that shone through a 45-meter telescope, according to the team, 40 light years from the Trappist-1 system would be easily detectable. Artist & # 39; s impression of the Trappist 1 planets is shown
With the help of a laser focused by a huge telescope, the researchers say that this & # 39; door light & # 39; up to 20,000 light-years away. Closer systems such as Trappist-1 would have a clearer picture of the signal
Although not visible to the naked eye, the beam may interfere with the spacecraft's instruments on its path or damage a person's vision if viewed directly.
& # 39; If you wanted to build this thing on the other side of the moon where no one lives or runs a lot, it could be a safer place, Clark says.
& # 39; Overall, this was a feasibility study. Whether this is a good idea or not, that is a discussion for future work. & # 39;
If the roles were reversed and instead we were looking for a beacon of this kind out of space, the researchers say it is hard to find with current technology.
WHAT ARE THE MAIN DISCOVERIES MADE BY MAN IN HIS LOOKING FOR HIS LIFE?
Discovery of pulsars
British astronomer Dame Jocelyn Bell Burnell was the first person to discover a pulsar in 1967 when she saw a radio pulsar.
Since then, other types of pulsars have also been observed that emit X-rays and gamma radiation.
Pulsars are essentially rotating, highly magnetized neutron stars, but when they were first discovered, they were thought to come from extraterrestrials.
& # 39; Wow! & # 39; Radio signal
In 1977, an astronomer who was looking for extraterrestrial life in the sky above Ohio saw a powerful radio signal so strong that he got excited & # 39; Wow! & # 39; Wrote next to his data.
In 1977 an astronomer looking for extraterrestrial life in the nearby sky above Ohio saw a powerful radio signal so strong that he was excited & # 39; Wow! & # 39; Wrote next to his data
The 72-second explosion, spotted by Dr. Jerry Ehman by a radio telescope, came from Sagittarius but did not match a celestial body.
Conspiracy theorists have since claimed that the & # 39; Wow! signal & # 39 ;, which was 30 times stronger than background radiation, was a message from intelligent extraterrestrials.
Fossilized martian microbes
In 1996, NASA and the White House made the explosive announcement that the rock contained traces of Marschantsen.
The meteorite, cataloged as Allen Hills (ALH) 84001, deposited 13,000 years ago in the frozen refuse areas of Antarctica and was restored in 1984.
Photographs were released with elongated segmented objects that seemed strikingly lifelike.
Photographs were released with elongated segmented objects that seemed strikingly lifelike (photo)
However, the excitement did not last long. Other scientists wondered if the meteorite samples were contaminated.
They also argued that heat generated when the stone was blasted into space would have created mineral structures that could be mistaken for microfossils.
Behavior of Tabby's Star in 2005
The star, also known as KIC 8462852, is located at 1,400 light years away and has baffled astonomers since it was discovered in 2015.
It dims at a much faster rate than other stars, which some experts have suggested is a sign of extraterrestrials using the energy of a star.
The star, also known as KIC 8462852, is located at 1,400 light-years away and has baffled astonomers since it was discovered in 2015 (artist & # 39; s impression)
Recent studies have shown the possibility of an extraterrestrial megastructure & # 39; eliminated and suggest instead that a ring of dust could cause the strange signals.
Exoplanets in the Goldilocks Zone in 2015
In February of this year, astronomers announced that they had seen a galaxy with planets that could sustain life only 39 light years later.
Seven earthy planets were discovered in orbit around the nearby dwarf stars & Trappist-1 & # 39 ;, and they could all have water on their surface, one of the most important components of life.
Three of the planets have such good conditions that scientists say that life has already evolved on them.
Researchers claim that within a decade they will know whether or not there is life on one of the planets, and said & # 39; this is just the beginning & # 39 ;.
& # 39; It is almost unlikely that a telescope survey will detect an alien laser unless we limit our survey to the nearest stars, & # 39; says Clark.
"With current research methods and instruments, it is unlikely that we would actually have the luck to imagine a beacon flash, assuming that extraterrestrials exist and they make & # 39 ;, says Clark.
However, because the infrared spectra of exoplanets are being studied for traces of gases that indicate the viability of life, and as full-sky surveys get more coverage and become faster, we can be sure that, if ET is on the calling is, we will detect it. & # 39;