Results tagged “SETI”

If a sufficiently advanced civilization can either modulate the emission from an X-ray binary, or make use of the natural high luminosity to power an artificial transmitter, these can serve as good beacons for interstellar communication without involving excessive energy costs to the broadcasting civilization.

While we await with interest a formal write-up of the RATAN-600 result, the claim that the detection could be a signal from an extraterrestrial civilization has attracted much media interest.

A spectral line image cube generated from 115 minutes of MWA data that covers a field of view of 400 sq. deg. around the Galactic Centre is used to perform the first Search for ExtraTerrestrial Intelligence (SETI) with the Murchison Widefield Array.

We report radio SETI observations on a large number of known exoplanets and other nearby star systems using the Allen Telescope Array (ATA) for about 19000 hours from May 2009 to Dec 2015.

We employed the SERENDIP III system with the Arecibo radio telescope to search for possible artificial extraterrestrial signals. Over the four years of this search we covered 93% of the sky observable at Arecibo at least once and 44% of the sky five times or more with a sensitivity of ~3E-25 W/m².

Over the past few years, astronomers have detected thousands of planets and planet candidates by observing their periodic transits in front of their host stars.

The F-type star KIC~8462852 has recently been identified as an exceptional target for SETI (search for extraterrestrial intelligence) observations.

Life on other planets would likely be brief and become extinct very quickly, say astrobiologists from The Australian National University (ANU).

"A globular cluster might be the first place in which intelligent life is identified in our galaxy," says lead author Rosanne Di Stefano of the Harvard-Smithsonian Center for Astrophysics (CfA).

Within the scheme of conformal cyclic cosmology (CCC), information can be transmitted from aeon to aeon.

We address the possibility that intelligent civilisations that destroy themselves could present signatures observable by humanity.

We address the possibility that intelligent civilisations that destroy themselves could present signatures observable by humanity.

The primary challenge of rocket propulsion is the burden of needing to accelerate the spacecraft's own fuel, resulting in only a logarithmic gain in maximum speed as propellant is added to the spacecraft.

Wright et al. 2014 have embarked on a search for advanced Karadashev Type III civilisations via the compilation of a sample of sources with extreme mid-IR emission and colours.

If advanced extraterrestrial civilizations choose to construct vast numbers of Dyson spheres to harvest radiation energy, this could affect the characteristics of their host galaxies.

The Breakthrough Prize Foundation and its founder, internet investor Yuri Milner, have signed a contract with the University of California, Berkeley, to lead a major escalation in the search for extraterrestrial intelligence, or SETI.

After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced civilizations in them.

Astronomers have expanded the search for extraterrestrial intelligence into a new realm with detectors tuned to infrared light. Their new instrument has just begun to scour the sky for messages from other worlds.

The vast collecting area of the Square Kilometre Array (SKA), harnessed by sensitive receivers, flexible digital electronics and increased computational capacity, could permit the most sensitive and exhaustive search for technologically-produced radio emission from advanced extraterrestrial intelligence (SETI) ever performed.

When astronomers conducting the search for extraterrestrial intelligence (SETI) find other cultures in the universe, could we understand their messages?