Two injured comb jellyfish might merge to create a single entity.

A shimmering sea creature known as a comb jelly exhibits incredible abilities. Despite being injured, two comb jellies can fuse into one body without experiencing tissue rejection, unlike other animals. Moreover, their nervous systems merge, and their digestive tracts combine to share food.

This discovery could assist researchers in understanding how the immune system evolved to differentiate an organism’s own tissues from those of another organism, as well as shed light on the evolution of the nervous system.

Although commonly referred to as comb jellies or ctenophores, they are distinct from jellyfish due to their unique body structures. These creatures are the most ancient beings to have branched off from the common ancestor of all animals, making them a captivating subject for scientists studying early animal evolution. Their nervous system, composed of interconnected neurons forming a continuous network, sets them apart from other animals.

While studying the vibrant combs of ctenophores, specifically Mnemiopsis leidii, at the University of Exeter in the UK, researcher Kei Shirokura noticed a unique specimen with two posterior ends and apical organs. This prompted further investigation.

Through experimentation involving cutting out pieces from unrelated individuals and pairing them together, Shirokura discovered that in most cases, the two bodies seamlessly merged into one within hours. The absence of tissue rejection suggested a lack of xenorecognition, indicating an inability to distinguish between self and non-self.

When prodded, the fused body responded collectively, demonstrating complete integration of the nervous systems. Additionally, the digestive tracts fused, allowing shared food consumption through a single entry point.

This groundbreaking discovery raises questions about when animals developed heterogeneous cognition and the mechanisms behind neural network formation and information processing. Similarly, ctenophores possess the ability to revert from adulthood to a larval-like stage under certain conditions, hinting at a common ancestral characteristic shared among animals.

The potential applications of ctenophores in understanding biological processes like tissue rejection, regeneration, and aging, which are relevant to human health, make them a valuable model for future research.

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Source: www.newscientist.com

Review of Still Wakes the Deep – The Terrifying Entity on a 1970s Scottish Oil Rig | Video Games

TThe film’s premise is a classic of the genre: one day, workers on the oil rig Beira D hit something with their drill, and soon a nameless monster descends on the vessel, killing the crew one by one. At the same time, Glaswegian electrician Cameron “Caz” McCreary is already on the verge of leaving the rig, having been fired from his remote workplace where he took refuge from the police after a huge bar fight. It is in his work boots that we step on as he desperately searches for a way out.

The team behind Still Wakes the Deep is hardly the same as The Chinese Room, the developer behind previous hits Amnesia: A Machine for Pigs and Everybody’s Gone to the Rapture, both of which share the same trademark high visual fidelity, realistic soundwork, and emotive acting. Still Wakes the Deep is set on perhaps the most realistic oil rig ever seen in media, down to the hundreds of tiny hissing valves and labyrinthine metal staircases that groan dangerously. This wouldn’t be the place for health and safety talk, even without the terror looming from the deep, and the rig is by far the game’s most prominent character.

Still Wakes the Deep is also probably the most Scottish game you’ll ever play, and there’s a surprising amount of it. Each snippet of dialogue is a great example of how natural conversation should be, whether Kaz is talking to his few remaining colleagues or reflecting on the events that led him to Beira D. But at around six hours, the game is short, and there isn’t enough time for character development beyond a perfunctory introduction, which makes it hard to empathize with the characters, and isn’t helped by the clumsy device of having several characters call you in succession only to die over the phone.




The most realistic oil rig ever made in media…and yet it awakens the deep sea. Photo: Incognito mode

This is one of The Chinese Room’s most interactive games, doing more than just walking around and looking at things. But its gameplay design has one big problem: me, the savvy player. All of Still Wakes’ gameplay devices are used in so many games that I couldn’t help but groan the first time I saw yellow paint splattered on a ledge to grab onto. After that, yellow is everywhere: yellow tarps showing you where to climb, yellow edges on targets you can jump through, etc. Beira D goes from an interesting maze to a smooth parkour course.

When enemies appear, Caz can’t fight them; instead, he must sneak through them. Areas are littered with crouching spaces and items you can throw as distractions, and they’re often in rooms that you’ll need to cross multiple times before you can take cover. Ideally, this should be a source of tension, but as with navigation, the game makes it very clear what’s coming (and what’s going: at one point a rig worker literally shouts across a loud, echoing room that a monster is actually leaving), so there’s little you can do as the player other than follow the path.




Still awaken the abyss. Photo: Incognito mode

I was frustrated when I found the light from my headlamp didn’t bother the monsters, making it incredibly easy to sneak around. Or I’d fail a jump for purely camera-related reasons and have to listen to McCreary swear as he falls to his death multiple times, and I felt the tension melt away. The ever-present desire to help the player contrasts with horror games’ need to leave us in the dark sometimes. Every time the illusion crumbled, I left the game to put up with just to see what would happen to a character I wasn’t particularly attached to.

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Still Wakes the Deep manages to create an atmospheric portrait of an ordinary person with no special skills simply trying to survive in the harshest environment imaginable, but there aren’t enough real scares or compelling moments to make it memorable beyond that.

Source: www.theguardian.com

Largest black hole energizes the most luminous entity in the cosmos

Artist's impression of record-breaking quasar J0529-4351

ESO/M.Kornmesser

A quasar 500 trillion times brighter than the Sun has earned the title of the brightest known object in the universe. It appears to be powered by a supermassive black hole that devours a sun-sized mass every day.

Quasars are the centers of galaxies where gas and dust falling into a supermassive black hole emit energy in the form of electromagnetic radiation. christian wolff Researchers at the Australian National University in Canberra will discover a new object called J0529-4351 in 2022 by scouring data from the Gaia Space Telescope and looking for extremely bright objects outside the Milky Way that have been mistaken for stars. The brightest quasar was discovered for the first time.

Follow-up observations from the Very Large Telescope (VLT) in Chile revealed that it is the brightest object in the universe as we know it.

Wolf and his colleagues used an instrument on the VLT called a spectrometer to analyze the light coming from J0529-4351 and calculate how much was produced by the black hole's swirling disk of gas and matter, called the accretion disk. did. This revealed that J0529-4351 is the fastest growing black hole in the universe, swallowing about 413 solar masses per year, or more than one sun per day.

Using the spectra of these lights, the researchers calculated that the mass of the black hole was between 5 billion and 50 billion solar masses.

Wolf and his colleagues also discovered the brightest quasar to date in 2018, about half as bright as J0529-4351. Wolf believes this new discovery is likely to account for most of the observable sky and remain the record holder for some time. Now, thanks to extensive star catalogs like those created by Gaia, they can be studied in great detail. “This is the largest unicorn we've ever found with the longest horn on its head. I don't think this record will ever be surpassed,” Wolf says.

The quasar's accretion disk appears to be the widest ever known, measuring 7 light-years in diameter. It says this provides a rare opportunity to directly image a black hole and precisely measure its mass. Christine Dunn At Durham University, UK. “This is large enough and bright enough that it can be solved with current equipment,” he says Done. “That means we can more directly measure the mass of this monster black hole. I was very excited about that.”

VLT is currently upgrading its spectroscopic equipment as part of the Gravity+ project, which should allow it to resolve the characteristics of J0529-4351 in detail. This means different parts of a quasar's accretion disk can be distinguished and better understood, but it could take several years, Dunn said.

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Source: www.newscientist.com