A Chinese Telescope Did Not Discover an Alien Sign. The Search Continues.

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It was a mission that launched a thousand interstellar desires.

Fifty years in the past, NASA revealed a fats, 253-page e-book titled, “Project Cyclops.” It summarized the outcomes of a NASA workshop on tips on how to detect alien civilizations. What was wanted, the assembled group of astronomers, engineers and biologists concluded, was Cyclops, an enormous array of radio telescopes with as many as a thousand 100-meter-diameter antennas. At the time, the mission would have price $10 billion. It may, the astronomers mentioned, detect alien indicators from as far-off as 1,000 light-years.

The report kicked off with a citation from the astronomer Frank Drake, now an emeritus professor on the University of California, Santa Cruz:

At this very minute, with nearly absolute certainty, radio waves despatched forth by different clever civilizations are falling on the earth. A telescope will be constructed that, pointed in the precise place and tuned to the precise frequency, may uncover these waves. Someday, from someplace out among the many stars, will come the solutions to lots of the oldest, most essential and most enjoyable questions mankind has requested.

The Cyclops report, lengthy out of print but available online, would turn into a bible for a era of astronomers drawn to the dream that science may reply existential questions.

“For the very first time, we had technology where we could do an experiment instead of asking priests and philosophers,” Jill Tarter, who learn the report when she was a graduate scholar and who has devoted her life to the seek for extraterrestrial intelligence, mentioned in an interview a decade ago.

Credit…NASA

I used to be reminded of Cyclops and the work it impressed this week when word flashed around the world that Chinese astronomers had detected a radio sign that had the traits of being from an extraterrestrial civilization — particularly, it had a really slender bandwidth at a frequency of 140.604 MHz, a precision nature doesn’t normally obtain by itself.

They made the detection utilizing an enormous new telescope known as the Five-hundred-meter Aperture Spherical radio Telescope, or FAST. The telescope was pointed within the path of an exoplanet named Kepler 438 b, a rocky planet about 1.5 instances the scale of Earth that orbits within the so-called liveable zone of Kepler 438, a purple dwarf star tons of of sunshine years from right here, within the constellation Lyra. It has an estimated floor temperature of 37 levels Fahrenheit, making it a candidate to harbor life.

Just as rapidly, nonetheless, an article within the state-run newspaper “Science and Technology Daily” reporting the invention vanished. And Chinese astronomers have been pouring chilly water on the consequence.

Zhang Tong-jie, the chief scientist of China ET Civilization Research Group, was quoted by Andrew Jones, a journalist who tracks Chinese area and astronomy developments, as saying, “The possibility that the suspicious signal is some kind of radio interference is also very high, and it needs to be further confirmed or ruled out. This may be a long process.”

“These signals are from radio interference; they are due to radio pollution from earthlings, not from E.T.,” he wrote in an electronic mail.

This has turn into a well-known story. For half a century, SETI, or the seek for extraterrestrial intelligence, has been a recreation of whack-a-mole, discovering promising indicators earlier than monitoring them right down to orbiting satellites, microwave ovens and different earthly sources. Dr. Drake himself pointed a radio telescope at a pair of stars in 1960 and shortly thought he had struck gold, solely to search out out the sign was a stray radar.

More lately, a sign that gave the impression to be coming from the path of the solar’s closest stellar neighbor, Proxima Centauri, was tracked right down to radio interference in Australia.

Just as NASA’s announcement final week that it could make a modest funding within the scientific study of unidentified flying objects was meant to convey rigor and practicality to what many criticized as wishful pondering, so, too, was the company’s Cyclops workshop held at Stanford over three months in 1971. The convention was organized by John Billingham, an astrobiologist, and Bernard Oliver, who was the pinnacle of analysis for Hewlett-Packard. The males additionally edited the convention’s report.

In the introduction, Dr. Oliver wrote that if something got here of Cyclops he would take into account this crucial yr of his life.

“Cyclops was, indeed, a milestone, largely in pulling together a coherent SETI strategy, and the clear calculations and engineering design that followed,” mentioned Paul Horowitz, an emeritus professor of physics at Harvard who went on to design and begin his personal listening marketing campaign known as Project Meta, funded by the Planetary Society. The film director Steven Spielberg (“E.T.” and “Close Encounters of the Third Kind”) attended the official opening in 1985 on the Harvard-Smithsonian Agassiz Station in Harvard, Mass.

“SETI was for real!” Dr. Horowitz added.

But what Dr. Oliver initially acquired was solely a “Golden Fleece” award from Senator William Proxmire, Democrat of Wisconsin, who crusaded towards what he thought-about authorities waste.

“In my view, this project should be postponed for a few million light years,” he said.

On Columbus Day in 1992, NASA did provoke a restricted search; a yr later, Congress canceled it on the behest of Senator Richard Bryan, Democrat of Nevada. Denied federal assist ever since, the SETI endeavor has limped alongside, supported by donations to a nonprofit group, the SETI Institute, in Mountain View, Calif. Recently, by way of a $100 million grant, the Russian entrepreneur Yuri Milner arrange a brand new effort known as Breakthrough Listen. Dr. Horowitz and others have expanded the search to what they name “Optical SETI,” monitoring the sky for laser flashes from distant civilizations.

Cyclops was by no means constructed, which is simply as nicely, Dr. Horowitz mentioned, “because, by today’s standards, it would have been an expensive hulking monster.” Technological developments like radio receivers that may take heed to billions of radio frequencies without delay have modified the sport.

China’s big new FAST telescope, additionally nicknamed “Sky Eye,” was in-built 2016 partly with SETI in thoughts. Its antenna occupies a sinkhole in Guizhou in Southwest China. The dimension of the antenna eclipses what was the long-lasting Arecibo radio telescope in Puerto Rico, which collapsed ignominiously in December 2020.

Now FAST and its observers have skilled their very own trial by false alarm. There will likely be many extra, SETI astronomers say.

Those who endure profess to not be discouraged by the Great Silence, as it’s known as, from on the market. They’ve all the time been within the seek for the long term, they are saying.

“The Great Silence is hardly unexpected,” mentioned Dr. Horowitz, together with as a result of solely a fraction of a % of the 200 million stars within the Milky Way have been surveyed. Nobody ever mentioned that detecting that rain of alien radio indicators could be simple.

“It might not happen in my lifetime, but it will happen,” Dr. Werthimer mentioned.

“All of the signals detected by SETI researchers so far are made by our own civilization, not another civilization,” Dr. Werthimer grumbled in a collection of emails and phone conversations. Earthlings, he mentioned, might need to construct a telescope on the backside of the moon to flee the rising radio air pollution on Earth and the interference from constellations of satellites in orbit.

The current time, he mentioned, may be a novel window during which to pursue SETI from Earth.

“One hundred years ago, the sky was clear, but we didn’t know what to do,” he mentioned. “One hundred years from now, there will be no sky left.”




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Dennis Overbye

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