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SETI (Search For Extraterrestrial Intelligence): Compendium / Miscellaneous

AI Built To Hunt Extraterrestrial Intelligence Just Detected 8 New Promising Signals​


The algorithm, developed by Peter Xiangyuan Ma at the University of Toronto in Canada, and his team, was trained to analyze vast datasets from radio telescopes, specifically looking for signals that could not have a terrestrial origin.

The Search for Extraterrestrial Intelligence (SETI) project, which includes the Breakthrough Listen Initiative, has been combing through massive data sets, looking for signs of technologically advanced civilizations elsewhere in the galaxy. The challenge lies in filtering out the tens of millions of false positives found in these datasets. The machine learning algorithm developed by Xiangyuan Ma and his team has been trained to identify distinctive patterns in the data, making it easier to spot potential signals of interest.

These signals correspond to five stars located between 30 and 90 light-years from Earth. One of these stars, HIP 62207, is similar to our sun. However, the signals were not persistent in time, disappearing when the stars were reobserved. Despite this, the team encourages further observations of these targets.

This work represents the most comprehensive machine learning-based technosignature search to date.

https://blog.physics-astronomy.com/2023/08/ai-built-to-discover-extraterrestrial.html

maximus otter
 

Source of 'alien' radio signals may have been discovered​

Scientists have captured mysterious radio signals traveling through space for more than a decade, baffled by what could be emitting such raging pulses.

The first FRB was spotted, or rather 'heard' by radio telescopes, back in 2001 but was not discovered until 2007 when scientists were analyzing archival data.

Some experts believe the fast radio bursts (FRBs) could be aliens attempting to make contact with Earth, while others suspect black holes are the source.

Now, researchers at the University of Tokyo have suggested FRBs are caused by starquakes on rapidly spinning neutron stars that possess the most powerful magnetic fields in the known universe.

Professor Tomonori Totani said: 'Recent observational advances have led to the detection of thousands more FRBs, so we took the opportunity to compare the now large statistical data sets available for FRBs with data from earthquakes and solar flares, to explore possible similarities.'

Final analysis showed a 'striking' similarity between FRBs and earthquake data - four to be exact.

Both had an aftershock 10 to 50 percent of the time after each event and the aftershock occurrence rate decreases with time, as a power of time.

The third similarity was the aftershock rate is always constant even if the FRB-earthquake activity changes significantly.

'And, fourth, there is no correlation between the energies of the main shock and its aftershock,' Totani said.

'This strongly suggests the existence of a solid crust on the surface of neutron stars, and that starquakes suddenly occurring on these crusts releases huge amounts of energy which we see as FRBs.'

https://www.dailymail.co.uk/science...rce-starquakes-alien-radio-signals-stars.html

maximus otter
 

HUNT FOR ALIEN TECHNOLOGY FINISHES SCAN OF 1.6 MILLION STAR SYSTEMS “FLAGGED AS INTERESTING TARGETS”​

A team of Irish physicists using the state-of-the-art Irish LOFAR telescope have scanned 1.6 million star systems that previous efforts have flagged as interesting targets to look for evidence of alien technology. Part of the Breakthrough Listen project, this latest Search for Extraterrestrial Intelligence (SETI) effort was the first to scan at much lower radio frequencies, something previous efforts were not equipped to do.

Although no definitive signs of alien technology were discovered, these 1.6 million star systems were just the tip of the iceberg. In fact, the researchers involved say they are already upgrading their equipment to widen the searchable radio frequency spectrum even further.

https://thedebrief.org/hunt-for-ali...star-systems-flagged-as-interesting-targets/m

maximus otter
 
maximus otter said:

HUNT FOR ALIEN TECHNOLOGY FINISHES SCAN OF 1.6 MILLION STAR SYSTEMS “FLAGGED AS INTERESTING TARGETS”​

A team of Irish physicists using the state-of-the-art Irish LOFAR telescope have scanned 1.6 million star systems that previous efforts have flagged as interesting targets to look for evidence of alien technology. Part of the Breakthrough Listen project, this latest Search for Extraterrestrial Intelligence (SETI) effort was the first to scan at much lower radio frequencies, something previous efforts were not equipped to do.

Although no definitive signs of alien technology were discovered, these 1.6 million star systems were just the tip of the iceberg. In fact, the researchers involved say they are already upgrading their equipment to widen the searchable radio frequency spectrum even further.

https://thedebrief.org/hunt-for-ali...star-systems-flagged-as-interesting-targets/m

maximus otter
Click to expand...

This stoty come up from that link:

MACH NINE STARGAZER SPACEPLANE IS FINALLY REVEALED​

Company CEO Promises One Hour Flight Time to Anywhere in the World

This link works:
https://thedebrief.org/hunt-for-ali...-star-systems-flagged-as-interesting-targets/​

 
It will have to do more than the 7000 mph they talk about to go anywhere in the world in a hour.
I smell
:bs:
 
RaM said:
It will have to do more than the 7000 mph they talk about to go anywhere in the world in a hour.
I smell
:bs:
Click to expand...
You also have to factor in the Earth's rotation (about 1000 mph). Just fly counter to Earth's rotation.
 

"Three Stars Vanished From The Sky in 1952. We Still Can't Find Them."​

"At around 8:52 that evening a photographic plate captured the light of three stars clustered together. At a magnitude of 15, they were reasonably bright in the image.

At 9:45 pm the same region of sky was captured again, but this time the three stars were nowhere to be seen. In less than an hour they had completely vanished."

https://www.sciencealert.com/three-stars-vanished-from-the-sky-in-1952-we-still-cant-find-them
 
Paul_Exeter said:

"Three Stars Vanished From The Sky in 1952. We Still Can't Find Them."​

"At around 8:52 that evening a photographic plate captured the light of three stars clustered together. At a magnitude of 15, they were reasonably bright in the image.

At 9:45 pm the same region of sky was captured again, but this time the three stars were nowhere to be seen. In less than an hour they had completely vanished."

https://www.sciencealert.com/three-stars-vanished-from-the-sky-in-1952-we-still-cant-find-them
Click to expand...
Seems like this one has also done a runner!
1698575989349.png
 
These two images were taken fifty minutes apart. That is almost certainly too short a time for three stars to disappear simultaneously - the light-travel-time between the individual stars would probably be longer than that, so they would not have even been in the same frame of reference. The most likely explanation is a photographic artifact, possibly caused by a cosmic ray event or other radioactive emission (such as dust from an atomic test in nearby New Mexico).
 
eburacum said:
These two images were taken fifty minutes apart. That is almost certainly too short a time for three stars to disappear simultaneously - the light-travel-time between the individual stars would probably be longer than that, so they would not have even been in the same frame of reference. The most likely explanation is a photographic artifact, possibly caused by a cosmic ray event or other radioactive emission (such as dust from an atomic test in nearby New Mexico).
Click to expand...
That or:

1791.jpeg
 
There is a bit of buzz around so-called vanishing stars right now,

"Researchers Have Identified 100 Mysteriously Disappeared Stars in The Night Sky​

"Not all vacancies have such convenient explanations, though. Some were there one moment and gone the next, inviting speculation over rare types of star death, extreme astrophysics, and, of course… advanced alien technology."
https://www.sciencealert.com/a-look...ores-of-stars-that-have-mysteriously-vanished

And:

"An ancient celestial map recently found in Italy includes an unknown star​

Researchers at Italy's National Institute for Astrophysics discovered a celestial map believed to be from between 1800 to 400 BC. Scientists say there's one star on it that doesn't match our sky."
https://www.npr.org/2023/12/28/1222...ently-found-in-italy-includes-an-unknown-star
 
blessmycottonsocks said:
Today's Observer has an interesting article about the possibility of alien life, with the headline "It only takes one to be real and it changes humanity for ever: what if we’ve been lied to about UFOs?"

https://www.theguardian.com/science...d-by-aliens-lied-to-ufos-uaps-grusch-congress
Click to expand...
It is quite surreal.

My personal belief is that UFOs are not alien visitors. But I don't understand why the US government won't release all the information, a refusal pretty much guaranteed to ignite the debate further.

Unless of course it's a deep-rooted fear by a bureaucracy to release information, which seems all too familiar.

If there really is nothing to see, why not let it all out?!
 
Back to SETI:

"'It's getting closer and closer for sure.' How SETI is expanding its search for alien intelligence (exclusive)"​


https://www.space.com/seti-expanding-search-for-alien-intelligence

... and:

"Hubble Spots Water Vapor in Small Exoplanet’s Atmosphere"​

Astronomers are intrigued when finding evidence of water vapor on exoplanets. A recent target is the planet GJ 9827d, which may have a water-rich atmosphere around it. No bigger than twice Earth’s diameter, the planet could be an example of potential water-rich worlds elsewhere in our galaxy."
https://scitechdaily.com/hubble-spots-water-vapor-in-small-exoplanets-atmosphere/
 
Paul_Exeter said:
Back to SETI:

"'It's getting closer and closer for sure.' How SETI is expanding its search for alien intelligence (exclusive)"​


https://www.space.com/seti-expanding-search-for-alien-intelligence

... and:

"Hubble Spots Water Vapor in Small Exoplanet’s Atmosphere"​

Astronomers are intrigued when finding evidence of water vapor on exoplanets. A recent target is the planet GJ 9827d, which may have a water-rich atmosphere around it. No bigger than twice Earth’s diameter, the planet could be an example of potential water-rich worlds elsewhere in our galaxy."
https://scitechdaily.com/hubble-spots-water-vapor-in-small-exoplanets-atmosphere/
Click to expand...
Wow! (sorry :chuckle:)
 
cycleboy2 said:
It is quite surreal.

My personal belief is that UFOs are not alien visitors. But I don't understand why the US government won't release all the information, a refusal pretty much guaranteed to ignite the debate further.

Unless of course it's a deep-rooted fear by a bureaucracy to release information, which seems all too familiar.

If there really is nothing to see, why not let it all out?!
Click to expand...
The US (or any other) government would be very reluctant to make public any information that could compromise state security - like secret trials of experimental aircraft/drones/missiles etc. which resulted in public reports of UFOs.
 
Humans only see visible light.

We do not know what wave lengths aliens can detect.

Sixty years of SETI has produced nothing.
 
Paul_Exeter said:
A recent target is the planet GJ 9827d, which may have a water-rich atmosphere around it. No bigger than twice Earth’s diameter, the planet could be an example of potential water-rich worlds elsewhere in our galaxy."
https://scitechdaily.com/hubble-spots-water-vapor-in-small-exoplanets-atmosphere/
Click to expand...
GJ 9827d is nothing like Earth; it is best described as a mini-Neptune, a planet that is around 3.5 times as massive as Earth and surrounded by a thick hydrogen/helium atmosphere.

Deep below the clouds of such a planet there is probably a layer of water hundreds of kilometers deep, which shades into a high-pressure, hot, dense ice mantle which is denser than the water and so does not float.

Not really a place where any recognisable Earth-like life could exist.
 
I think all the extrasolar planets are marvellous in themselves.

They dont need inhabitants.

And those would be microbes, anyway.
 
Perhaps 'alien' life is up there rather than out there? [free PDF download]:

"Extraterrestrial Life in Space. Plasmas in the Thermosphere: UAP, Pre-Life, Fourth State of Matter"​


"Plasmas up to a kilometer in size, behaving similarly to multicellular organisms have been filmed on 10 separate NASA space shuttle missions, over 200 miles above Earth within the thermosphere. These self-illuminated "plasmas" are attracted to and may "feed on" electromagnetic radiation."

https://www.researchgate.net/public...rmosphere_UAP_Pre-Life_Fourth_State_of_Matter
 
Yes. The most interesting aspect in this paper is the analysis of 'plasmas' seen from the ISS; these are mostly nearby ice crystals, but at least one appears to be a distant bolide meteor hitting the upper atmosphere of Earth. The centre of these images have been 'burnt out' because they are too bright, and so appear dark. This is consistent with a bolide.
plasma.png


The other interesting example is the experiment with a tethered satellite on STS-75; before this experiment there were a lot of high hopes for tether technology, and it was expected to be a cheap way of changing a satellite's altitude, and possibly a net generator of electricity. Instead of that, the electricity flow generated hot gases inside the tether, and it exploded into several wriggling pieces. A fascinating result, and potentially useful in the future, if we can make stronger tethers. But this paper presents the chaotic aftermath of the tether breakage as supporting the 'living plasma' hypothesis, and quite honestly it doesn't.

https://en.wikipedia.org/wiki/STS-75#Tethered_Satellite_System
 
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Aliens Could Be Trying to Get Our Attention Via Supernova-Timed Beacons​

A new SETI technique, combining game theory, astronomy, and data analysis, aims to locate sites from which alien civilizations might transmit signals.​

https://gizmodo.com/aliens-could-be-trying-to-get-our-attention-via-superno-1851256422

... also:

SETI Institute employs a novel ellipsoid technique when searching for signals from distant civilizations​


A team of researchers from the SETI Institute, Berkeley SETI Research Center and the University of Washington reported an exciting development for the field of astrophysics and the search for extraterrestrial intelligence (SETI), using observations from the Transiting Exoplanet Survey Satellite (TESS) mission to monitor the SETI Ellipsoid, a method for identifying potential signals from advanced civilizations in the cosmos.

https://phys.org/news/2024-02-seti-employs-ellipsoid-technique-distant.html
 
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