Since its inception back in 1960 the Search for Extraterrestrial Intelligence (SETI) has scanned our skies looking for clues of intelligent life elsewhere in our universe. As you might have already guessed the search has yet to bear any fruit since, as far as we’re concerned, no one has been sending signals to us, at least not in the way we’re listening for them. The various programs that make up the greater SETI aren’t particularly well funded however, often only getting a couple hours at a time on any one radio telescope on which to make their observations. That’s all set to change however as Russian business magnate Yuri Milner is going to inject an incredible $100 million into the program over 10 years.
SETI, for the unaware, is a number of different projects and experiments all designed to seek out extraterrestrial life through various means. Traditionally this has been done by scanning the sky for radiowaves, looking for signals that are artificial in nature. Whilst the search has yet to find anything that would point towards a signal of intelligent origin there have been numerous other signals found which, upon further investigation, have turned out to have natural sources. Other SETI programs have utilized optical telescopes to search for communications using laser based communications, something which we have actually begun investigating here on earth recently. There are also numerous other, more niche programs under the SETI umbrella (like those looking for things like Dyson Spheres are other mega engineering projects) but they all share the common goal of answering the same questions: are we alone here?
Since these programs don’t strictly advance science in any particular field they’re not well funded at all, often only getting a handful of hours on telescopes per year. This means that, even though such a search is likely to prove difficult and fruitless for quite a long time, we’re really only looking for a small fraction of the year. The new funds from Yuri Milner will bolster the observation time substantially, allowing for continuous observations for extended periods of time. This will both increase the chances of finding something whilst also providing troves of data that will also be useful for other scientific research.
As Yuri says whilst we’re not expecting this increased funding to instantly result in a detection event the processes we’ll develop along the way, as well as the data we gather, will teach us a lot about the search itself. The more we try the more we’ll understand what methods haven’t proved fruitful, narrowing down the possible search areas for us to investigate. The science fiction fan in me still hopes that we’ll find something, just a skerrick, that shows there’s some other life out there. I know we won’t likely find anything for decades, maybe centuries, but that hope of finding something out there is what’s driving this program forward.