Science & TechnologyS


Telescope

Astronomers spot oldest 'dead' galaxy yet observed

'Dead' galaxy Jades-GS-z7-01-QU
© Tobias J Looser et al.'Dead' galaxy Jades-GS-z7-01-QU
Using the James Webb Space Telescope, an international team of astronomers led by the University of Cambridge have spotted a 'dead' galaxy when the universe was just 700 million years old, the oldest such galaxy ever observed.

This galaxy appears to have lived fast and died young: star formation happened quickly and stopped almost as quickly, which is unexpected for so early in the universe's evolution. However, it is unclear whether this galaxy's 'quenched' state is temporary or permanent, and what caused it to stop forming new stars.

The results, reported in the journal Nature, could be important to help astronomers understand how and why galaxies stop forming new stars, and whether the factors affecting star formation have changed over billions of years.

Galaxy

Best of the Web: Earth's interactions with Mars may drive deep-sea circulation, 'surprising' new study suggests

mars earth rock
© The University of SydneyLead author Dr. Adriana Dutkiewicz from the EarthByte Group in the School of Geosciences at the University of Sydney.
Scientists from the Universities of Sydney and Sorbonne University have used the geological record of the deep sea to discover a connection between the orbits of Earth and Mars, past global warming patterns and the speeding up of deep ocean circulation.

They discovered a surprising 2.4-million-year cycle where deep currents wax and wane, which in turn is linked to periods of increased solar energy and a warmer climate.

The study, published in Nature Communications, tackles the questions of how geological-timescale climate change affects ocean circulation and how this could help scientists model future climate outcomes. The researchers sought to find whether ocean-bottom currents become more vigorous or more sluggish in a warmer climate.

Comment: And so the scientists admit that these processes could have a significant impact on our climate; aren't they essentially admitting that the (readily debunked) models much touted by global warmists are missing a significant piece of data?

Could it be that it's not Mars that's impacting the deep-ocean dynamics and, instead, it's that both Mars and the Earth are being impacted by the same, greater force? Such as the influence of the Sun?

Either way, it's a timely, and fascinating, finding: Also check out SOTT radio's:





NPC

AI's Fatal Flaw

AI's fatal flaw: people!
AI is all the rage.

But with the recent Gemini disaster along with a lack of truly killer applications using AI, it doesn't seem like AI is really going anywhere.

So, is it all just hype, or what?

Join me for a look at the real danger presented by AI.

Hint: It ain't SkyNet you need to be worried about!

Comet 2

The comet strike theory that just won't die

Mainstream science has done its best to debunk the notion, but a belief in a world-changing series of prehistoric impacts continues to gain momentum.
Comet Impact
© Photo illustration by Ricardo Tomás
In 2007, a group of researchers, led by a nuclear physicist named Richard Firestone, announced an astonishing discovery. They had uncovered evidence, they said, that 12,900 years ago, a comet — or possibly a whole fleet of comets — struck Earth and changed the course of history. For the preceding two and a half million years, through the Pleistocene Epoch, the planet's climate fluctuated between frozen stretches, called glacials, and warm interglacials. At that time, Earth was warming again, and the ice sheets that covered much of North America, Europe and Asia were in retreat. Mammoths, steppe bison, wild horses and other enormous mammals still wandered the Americas, pursued by bands of humans wielding spears with fluted stone blades. Suddenly, somewhere over the Upper Midwest — an explosion.

Presenting their claim in the Proceedings of the National Academy of Sciences, a top scientific journal, the researchers took the sober tone characteristic of such publications. But in The Cycle of Cosmic Catastrophes, a book published around the same time, two of the researchers described the scene more vividly. The impact caused the ground to shake and the sky to glow, they wrote. A hail of tiny molten particles sank into flesh and set forests ablaze. Soot blotted out the sun. Earth's magnetic field wavered, and living things were bombarded by cosmic rays, confounding the navigational senses of turtles and porpoises, which beached themselves en masse. Addled birds plummeted from the sky.

Most disastrous of all, the impact shattered the ice dam holding back Lake Agassiz, a vast expanse of glacial meltwater that stretched across Manitoba, Ontario, Saskatchewan, Wisconsin and Minnesota. The lake cascaded into the Atlantic Ocean, where the freshwater pooled over the denser seawater, disrupting the convection current carrying warm water north from the tropics. The Northern Hemisphere plunged back into full-glacial cold.

For decades, scientists had puzzled over the cause of this rapid climatic reversal, which they marked by, among other things, the reappearance in southerly fossil deposits of tundra plants. These included the wildflower Dryas integrifolia, which gives the 1,200-year time span its name: the Younger Dryas. Here was an explanation: The impact caused the sudden cooling, the Firestone team argued, and contributed to the demise of the mammoths, steppe bison and other large Pleistocene mammals, along with the people who pursued them.

Better Earth

39-million-year-old extinct whale may have been 'a physical impossibility'

P. colossus
© Alberto GennariAn artist's impression of P. colossus.
Last year, paleontologists discovered the fossil of a 39-million-year-old extinct whale in Peru that appeared to defy the limits of vertebrate size.

The team behind the lucky find estimated Perucetus colossus' body mass to be somewhere between 85 and 340 tonnes. But at 17 to 20 meters in length (around 56 to 65 feet), this would have made the animal impossibly dense, argue paleontologists Ryosuke Motani and Nicholas Pyenson, who were not involved in the initial discovery.

"It would have been a job for the whale to stay at the surface, or even to leave the sea bottom - it would have required continuous swimming against gravity to do anything in the water," says Motani from the University of California Davis.

Comment: This find may shed further light on the theory that a variety of physical constants of our own time were perhaps different in the distant past; and even in more 'recent' times, such as in just the last few millenia:


Nuke

Scientists discover Chernobyl 'super worms'

nematodes worms chernobyl radiation dna damage
© NYU/Sophia TintoriNematode worms collected in the Chernobyl Exclusion Zone, seen under a microscope.
Nematodes found in the highly radioactive zone showed no signs of DNA damage

A team of American researchers has found that the DNA of a common worm species appears to be immune to damage from chronic radiation in the Chernobyl Exclusion Zone. The area has been off-limits to humans since the 1986 nuclear power plant meltdown.

New York University (NYU) biology Professor Matthew Rockman and postdoctoral associate Sophia Tintori visited the Chernobyl Exclusion Zone (CEZ) in 2019 and gathered samples of a nematode worm species called Oscheius tipulae.

"These worms live everywhere, and they live quickly, so they go through dozens of generations of evolution while a typical vertebrate is still putting on its shoes," Rockman said in the press release announcing the results of the study this week.

Butterfly

Collective sensing may enable electric fish to sense beyond their own perceptual reach - first time documented in biology

electric fish Gnathonemus petersii
© Sawtell labWeakly electric fish like these, Gnathonemus petersii, may be tapping into sensory information garnered by nearby fish.
It would be a game-changer if all members of a basketball team could see out of each other's eyes in addition to their own. A research duo at Columbia's Zuckerman Institute has found evidence that this kind of collective sensing occurs in close-knit groups of African weakly electric fish, also known as elephantnose fish. This instantaneous sharing of sensory intelligence could help the fish locate food, friends and foes.

"In engineering it is common that groups of emitters and receivers work together to improve sensing, for example in sonar and radar. We showed that something similar may be happening in groups of fish that sense their environment using electrical pulses. These fish seem to 'see' much better in small groups," said Nathaniel Sawtell, PhD, a principal investigator at Columbia's Zuckerman Institute and a professor of neuroscience at Columbia's Vagelos College of Physicians and Surgeons.

Comment: See also:


Network

Russia & China plan to build nuclear power plant on moon

putin xi china russia
© Sputnik / Pavel Byrkin
A number of countries have been jostling to return humans to the Moon, with Moscow and Beijing teaming up in 2022 to sign a memorandum of understanding on joint exploration of the celestial body. The sides also pledged to work together to build a base there by the 2030s.

Russia and China are mulling jointly building a lunar nuclear power plant, Yuri Borisov, the head of Russia's space agency Roscosmos, said on Tuesday.

"Today we are seriously considering a project ... somewhere at the turn of 2033-2035 ... to deliver and install a power unit on the lunar surface together with our Chinese colleagues," Borisov said during a lecture at the World Youth Festival.

Comment: See also:


SOTT Logo Radio

SOTT Focus: MindMatters: It's Full of Life: Philosophy of ET with Andrew Davis

andrew davis
Astrophilosophy. Exotheology. Whitehead.

Andrew Davis is the program director for the Center for Process Studies. A philosopher and theologian, his latest work is on the metaphysics of exo-life. Today on MindMatters we discuss his work on science, religion, and what the impact of the discovery of ET life would mean for philosophy, and a general philosophical framework that would make sense of it.

We also discuss the opening up of public and academic interest in the topic of UFOs and non-human intelligences, David Ray Griffin's work and parapsychology, humans as an exemplification of what the universe does, the morphological and ontological templates that life may take elsewhere, the ontology of possibilities, shared commonalities that might allow for communication with ET forms of life, the mind of God, and more.


Running Time: 01:18:49

Download: MP3 — 108 MB



Whistle

From Nature, a devastating critique of origin-of-life research

cell thing
© IllustraOriginCell Blueprint
It's been over 153 years since Darwin's "warm little pond" letter to Joseph Hooker, his tentative hope to close the final gap in his naturalistic origins story. Despite numerous well-funded approaches by leading teams around the world, propped up by media hype, none have shown real progress. After coacervates, spark-discharge tubes, proteinoid microspheres, the RNA world, hydrothermal vents, astrobiology programs, and the rest of the circus, research into the origin of life by unguided natural processes seems further behind than it did in Darwin's day. The time has come for a confession, a reassessment, an overhaul, a paradigm shift, humility, and a collective restart.

Where is this stated? Not just in the ID literature, nor in a lecture by James Tour — although of course they both do say it. But in Nature. Are you listening, "Professor Dave"?

Yes, Nature, that magazine started by Norman Lockyer in 1869 to promote Darwin's naturalistic views, has had to face judgment day. Researchers have learned a lot of facts about molecules, but "Findings can be true but irrelevant," the authors warn.