Today in cool news: We may have already made first contact. But after last night's debate performance from The Donald, any intelligent life that might be out there is probably rethinking a potential visit.

The best evidence we have of intelligent extraterrestrial life is actually almost 40 years old. One night in August 1977, Jerry R. Ehman was monitoring a radio telescope at The Ohio State University when a signal came through that set off every alarm we have.

The radio signal we received lasted 72 seconds, and was exactly the type of transmission that we we would expect to receive from intelligent life somewhere else in the universe. The signal appears to have come from the northwest of the globular cluster of M55 in the constellation Sagittarius, near the Chi Sagittarii star group. That's a long way from home.

We only received this signal once, and despite hundreds of astronomers searching for decades, we've never heard it again.

The Ohio State University Radio Observatory and the North American AstroPhysical Observatory

It's known throughout the scientific community as the "WOW!" signal, after Jerry wrote Wow! in the margins of the data printout on August 15, 1977, while he was working on a SETI project at the Big Ear radio telescope in Delaware, Ohio.

The location of the signal in the constellation Sagittarius, near the Chi Sagittarii star group. Because of the design of the experiment, the location may lie in either one of the two red bands, and there is also significant uncertainty in the declination (vertical axis). For clarity, the widths of the red bands are not drawn to scale; they should actually be narrower.

Because we've never been able to find the signal again, some researchers have concluded that what Jerry R. Ehman heard in 1977 was most likely a signal from somewhere on Earth that bounced off of the ionosphere and was misinterpreted as an alien broadcast.

I want to believe that one day we'll hear it again.