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Tech & Science Aliens Would Be Dead Before Their Messages Reach Us

17:27  13 march  2018
17:27  13 march  2018 Source:   newsweek.com

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Is there anybody out there? No one knows. And according to a new study, if we ever do receive a signal that intelligent alien life existed somewhere across the galaxy, those aliens would probably be long dead by the time their message reached us .

Aliens will be dead before we get their signals | Science News - www.sciencenews.org. If any intelligent aliens out there are attempting to send us a message , they are likely to die out before their signals reach us . On top of that distance, however, is another consideration: civilizations don't last

  Aliens Would Be Dead Before Their Messages Reach Us © Provided by IBT Media

Is there anybody out there? No one knows. And according to a new study, if we ever do receive a signal that intelligent alien life existed somewhere across the galaxy, those aliens would probably be long dead by the time their message reached us.

That assessment is the conclusion of an unpublished study posted on arXiv. The study expands on the current mathematical model used to consider the search for extraterrestrial intelligence, or SETI. That model, known as the Drake equation, was created by astronomer and astrophysicist Frank Drake in 1961 to estimate the number of planets in the galaxy that might harbor extraterrestrial intelligence.

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An alien signal would take so long to cross the galaxy the sender would be dead . This is because radio signals travel at 186,000 miles per second If any intelligent aliens out there are attempting to send us a message , they are likely to die out before their signals reach us . That's the conclusion of

The odds of us receiving an alien message are greater today than ever before , but even if an extraterrestrial signal reaches us , its sender likely never will. < > In a time of instant messaging and the ability to circulate data around the world with a minimal delay, sending and receiving messages

The new study, led by Claudio Grimaldi, a scientist at the École Polytechnique Fédérale de Lausanne, in Switzerland, considered several factors contributing to the likelihood of receiving a message and the age of any civilization that would be sending it. Like ours, that distant civilization could use radio signals to transmit messages. These signals travel quickly, at 300,000 kilometers, or roughly 186,000 miles, per second.

But these signals must cover a lot of ground—or space, rather—before they could hit another habitable planet with intelligent life on it. Our galaxy alone spans 100,000 light years across. Humans have been sending radio signals for 80 years, but the first radio waves ever sent could only have traveled a maximum of 0.001 percent of the galaxy, Science News reports.

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Follow Us . Researchers believe that alien civilisations are unlikely to last more than 100,000 years – so the odds are that by the time we receive an alien signal, the creatures who sent it will be long dead .

In a tragic cosmic case of ‘missed calls’, we may never encounter extraterrestrials – because any aliens are likely to Researchers believe that alien civilisations are unlikely to last more than 100,000 years – so the odds are that by the time we receive an alien signal, the creatures who sent it will be long dead .

On top of that distance, however, is another consideration: civilizations don't last forever. In their new calculation, the researchers, which included Frank Drake, assumed that each civilization might last a maximum of 100,000 years. That means that if that civilization was sending radio signals for its entire lifetime, it would have reached 1,250 times as far a distance as Earth’s radio waves have reached. But that’s still only 1.25 percent of the galaxy.

If alien races were to send a signal, those waves would disperse and ripple through the galaxy, making spots of mixed “ghost signals.” If they reached us at all, the signals would take well over 100,000 years to arrive on Earth.

That means that by the time we receive any radiation that might have come from an alien race, that race would be long dead. There's another somewhat depressing corollary here that the researchers point out: Any signals that we send into space would not reach another form of intelligent life, if it exists, until humanity was long been extinct.

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