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US News Aliens Would Be Dead Before Their Messages Reach Us

01:10  14 march  2018
01:10  14 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. Sponsor Message . If signals from an alien civilization ever reach Earth, odds are the aliens will already be dead .

  Aliens Would Be Dead Before Their Messages Reach Us 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That assessment is the conclusion of an unpublished study posted on arXiv.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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Alien life will be long DEAD by the time any of their messages reach us because of the delay in pick

An alien signal would take so long to cross the galaxy the sender would be dead . If any intelligent aliens out there are attempting to send us a message , they are likely to die out before their signals reach us .

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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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 .

In a tragic cosmic case of ‘missed calls’, we may never encounter extraterrestrials – because any aliens are likely to be extinct by the time we receive their messages . Watch: Shocking moment gang member grabs pen and attacks witness in court before being shot 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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