KOMPAS.com – People still want to know if there is another life outside Earth. Now scientists have new ideas to steal the attention of our neighbors in the galaxy.
They plan to use the laser technology we now have as a flare or a "lightweight planetary verande" for foreigners who may be looking for us.
Scientists from the Massachusetts Institute of Technology (MIT) say the porch light will be able to capture another extraterrestrial life up to 20,000 light-years.
According to the team, infrared lasers can also be used to send basic messages into space. It serves as a kind of Morse code that tells other beings about the existence of a person on planet Earth.
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"It will be a challenging project, but it is not impossible to do it," said James Clark, one of the researchers who participated in the study.
"The types of lasers and binoculars that are built today can create detectable signals, so other creatures can see our stars and immediately see something unusual with the spectrum and will certainly attract more attention," he said in a quote from Scientific AlertOn Wednesday (11/07/2018).
A feasibility study proposes the use of a 1-2 megawatt focused laser over a 30-45 meter telescope.
This creates an infrared beam that is strong enough to beat the energy produced by the sun, and so it might be strong enough to capture the eyes of strangers.
The closest option is that aliens in the Proxima Centauri area (the nearest star on the ground) or TRAPPIST-1 (a star potentially populated over 40 light-years) can capture the transmitted signal.
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But the problem is without adequate telescopes. Meanwhile, the laser must be shot from a high position to minimize atmospheric interference or camera in the spacecraft that is undergoing.
"If we start communicating, we can send messages at speeds of around a few hundred bits per second that will get there within a few years," Clark said.
A new study also includes an analysis of whether similar laser beams made from space can be captured by instruments on Earth, although some experts say it is not possible because there will be too many obstacles to cover the light.
It is not clear when this plan will be implemented. But at least, if people want to promote the existence of the Earth, we already know one way.
"Generally, it's a feasibility study. It's a good idea or not, it requires further discussion later," Clark said.
This research was published in 2006 Astrophysical Journal.