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James Webb telescope zooms in on bizarre 'Einstein ring' caused by bending of the universe

James Webb telescope zooms in on bizarre 'Einstein ring' caused by bending of the universe

Yahoo28-03-2025

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The James Webb Space Telescope (JWST) has captured a stunning image of a bizarre astronomical optical illusion.
This "rare cosmic phenomenon", called an Einstein ring, appears as a single eye-like orb in the darkness of space, but is actually a distorted view of two distant galaxies in the constellation Hydrus.
In the bright center of this cosmic spectacle is one galaxy, while the stretched orange and blue color surrounding it is the light from another galaxy located behind it. The light from the more distant galaxy looks like a ring because it has been distorted by gravitational lensing.
Gravitational lensing occurs when the gravity of a massive object — like a galaxy or a black hole — bends the light from a more distant object. This effect is a direct consequence of Einstein's theory of relativity, which states that mass warps the fabric of space-time, causing light to follow curved paths, like a ball rolling down a curved slope.
"This effect is much too subtle to be observed on a local level, but it sometimes becomes clearly observable when dealing with curvatures of light on enormous, astronomical scales," ESA representatives wrote in a statement.
This latest image was released by ESA and the Canadian Space Agency today (March 27) as their March picture of the month. It was captured by JWST's Near-InfraRed Camera instrument and also includes data from the Wide Field Camera 3 and the Advanced Camera for Surveys instruments on the Hubble Space Telescope.
Related: 42 jaw-dropping James Webb Space Telescope images
Einstein rings like these are created when the distant light source, the massive lensing object, and the observer are perfectly aligned, resulting in the light appearing as a complete ring wrapped around the lensing object. As a result, they are rare.
In this case, the elliptical galaxy in the foreground — which is part of a galaxy cluster named SMACSJ0028.2-7537 — is so massive that it is bending the light of the spiral galaxy situated far behind it.
"Even though its image has been warped as its light travelled around the galaxy in its path, individual star clusters and gas structures are clearly visible," according to the statement
The fascinating phenomenon of gravitational lensing also allows astronomers to better understand the universe.
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Light emitted from distant galaxies, which existed long ago in the past, is often too faint to be observed directly from Earth. Strong gravitational lensing magnifies these galaxies, making them appear larger and brighter, and allowing astronomers to study some of the first galaxies formed after the Big Bang.
"Objects like these are the ideal laboratory in which to research galaxies too faint and distant to otherwise see," the ESA statement noted.
Additionally, because black holes and dark matter don't emit light, scientists can use gravitational lensing to detect and study these phenomena by measuring how they bend and magnify background stars.

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Sampling a 'quasi-moon': What's next for China's newly launched Tianwen 2 asteroid-sampling mission
Sampling a 'quasi-moon': What's next for China's newly launched Tianwen 2 asteroid-sampling mission

Yahoo

timean hour ago

  • Yahoo

Sampling a 'quasi-moon': What's next for China's newly launched Tianwen 2 asteroid-sampling mission

When you buy through links on our articles, Future and its syndication partners may earn a commission. China's latest deep-space mission is underway. The Tianwen 2 asteroid-comet probe lifted off on Tuesday (May 28), riding into the final frontier atop a Long March 3B rocket from the Xichang Satellite Launch Center in southwestern China. Tianwen 2 marks another step forward in China's ever-advancing, ever-ambitious robotic exploration program. Here's a brief rundown of what the spacecraft will do over the next few years, and what milestones it will achieve for China. Tianwen 2 is headed for Kamo'oalewa (also known as 2016 HO3), a near-Earth asteroid (NEA) discovered in 2016 that's between 100 and 330 feet (40 and 100 meters) wide. Kamo'oalewa is no ordinary space rock; it's a "quasi-moon" of Earth, meaning it circles the sun on a path that keeps it close to our planet. Earth has seven known quasi-satellites, including Cardea, which was recently named via a contest organized by the International Astronomical Union and the science podcast Radiolab. Kamo'oalewa is among the most interesting of these cosmic fellow travelers. Unlike most NEAs, it doesn't appear to have come from the main asteroid belt between Mars and Jupiter; rather, astronomers think it's a chunk of the moon that was blasted out by a giant impact within the past 10 million years. Analysis of the space rock could confirm that theory; it could also shed light on the evolution of the solar system. Tianwen 2 will deliver some of this key data, if all goes according to plan. The probe is expected to reach Kamo'oalewa in July of 2026. It will perform up-close observations with a variety of science gear, including cameras, spectrometers, a magnetometer and a dust analyzer. This work will reveal insights about the quasi-moon and help the team select a suitable sampling site. The probe will then swoop down to collect about 100 grams (3.5 ounces) of material from the space rock, apparently using two different methods: "touch and go" and "anchor and attach." The latter approach, which requires the use of one or more drills, has never been tried before, but touch and go is tried and true; NASA's OSIRIS-REx probe and Japan's Hayabusa2 used it to snag samples of the asteroids Bennu and Ryugu, respectively. Tianwen 2 will depart Kamo'oalewa in April 2027, hauling the space rock samples back to Earth. A capsule containing this precious material will land here about seven months later, but the mothership will fly on. Tianwen 2 will get a "gravity assist" from the Earth return, thanks to which it'll slingshot around our planet on its way to its second destination — the comet 311P/PANSTARRS, which resides in the asteroid belt. 311P/PANSTARRS, also known as P/2013 P5, was discovered in 2013 by astronomers using the Pan-STARRS 1 telescope in Hawaii. Like Kamo'oalewa, 311P/PANSTARRS is something of an oddball; it has both asteroid and comet features and is therefore sometimes categorized as an "active asteroid." For example, the 1,570-foot-wide (480-meter-wide) 311P/PANSTARRS sports six dust tails, perhaps because it's spinning fast enough to fling considerable amounts of its surface material into space. Tianwen 2 will arrive in orbit around the comet in 2035, then measure the target using its onboard instrument suite (all from afar; Tianwen-2 will not land on or sample 311P/PANSTARRS). The probe's data could reveal insights about active asteroids and comets in general, and also help establish which type of small body is largely responsible for delivering water to Earth billions of years ago. Related stories: — China to launch Tianwen 2 asteroid-sampling mission in 2025 — Earth's weird 'quasi-moon' Kamo'oalewa is a fragment blasted out of big moon crater — Tianwen 1: China's first Mars mission Tianwen 2 is China's first-ever mission to an asteroid or a comet, and just its second planetary exploration effort overall. The first, Tianwen 1, sent an orbiter and a rover to Mars in 2020. More of these missions are coming; China aims to launch the Tianwen 3 Mars sample-return mission in 2028 and Tianwen 4, a joint Jupiter-Uranus project, two years later. In fact, Tianwen 2 isn't China's first sample-return mission; the nation has pulled off two already. Chang'e 5 hauled material from the moon's nearside to Earth in December 2020, and Chang'e 6 returned the first-ever samples from the lunar farside in June 2024.

China's Tianwen 2 spacecraft sends home 1st photo as it heads for mysterious 'quasi-moon' asteroid
China's Tianwen 2 spacecraft sends home 1st photo as it heads for mysterious 'quasi-moon' asteroid

Yahoo

timean hour ago

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China's Tianwen 2 spacecraft sends home 1st photo as it heads for mysterious 'quasi-moon' asteroid

When you buy through links on our articles, Future and its syndication partners may earn a commission. China has released a first picture of its Tianwen 2 mission as the spacecraft heads for a near-Earth asteroid. Tianwen 2 launched on a Long March 3B rocket on May 28 and is tasked with rendezvousing with and sampling the mysterious asteroid Kamo'oalewa, which is one Earth's seven known "quasi moons." And the mission is proceeding well, according to a first official update. The China National Space Administration (CNSA) revealed in a June 6 statement that the spacecraft is operating well and is more than 3 million kilometers (1.86 million miles) away from Earth. CNSA also published an image taken by an engineering camera aboard the spacecraft showing one of Tianwen 2's two circular solar panels, which are similar in appearance to those on NASA's Lucy mission to visit the Trojan asteroids near Jupiter. Remarkably, the image is the first actual glimpse of Tianwen 2 released to the public. Until now, only artistic renderings had been released, and the mission's launch was not broadcast live. Tianwen 2 is expected to reach Kamo'oalewa in July 2026, following engine burns to fine-tune its orbit. It will spend several months orbiting and studying the asteroid — which scientists think could be a chunk of the moon that was blasted out by a giant impact — before collecting samples and heading for Earth. After delivering the samples in a reentry capsule in late 2027, Tianwen 2 will use Earth's gravity for a slingshot maneuver to send it on a course to rendezvous with main belt comet 311P/PANSTARRS around 2035. The mission, by visiting an asteroid and comet, aims to provide data on the nature and composition of the planetary bodies, as well as insights into big questions such as the evolution of the solar system and the origin of water on Earth. Related stories: — China launches Tianwen 2 mission to snag samples of a near-Earth asteroid (video) — Sampling a 'quasi-moon': What's next for China's newly launched Tianwen 2 asteroid-sampling mission — Earth's weird 'quasi-moon' Kamo'oalewa is a fragment blasted out of big moon crater Tianwen 2 will not be China's first deep space encounter with an asteroid. The country's Chang'e 2 lunar orbiter made a flyby of the asteroid Toutatis in 2012 as part of an extended mission after mapping the moon. China also has sample-return experience with its Chang'e 5 mission, which snagged material from the moon's near side in 2020, and Chang'e 6, which collected the first-ever samples from the lunar far side in 2024. Tianwen 2 is China's second planetary exploration mission. It follows Tianwen 1, launched in 2020, which sent an orbiter and a rover to Mars.

The Ardent Belief That Artificial General Intelligence Will Bring Us Infinite Einsteins
The Ardent Belief That Artificial General Intelligence Will Bring Us Infinite Einsteins

Forbes

time11 hours ago

  • Forbes

The Ardent Belief That Artificial General Intelligence Will Bring Us Infinite Einsteins

In today's column, I examine an AI conjecture known as the infinite Einsteins. The deal is this. By attaining artificial general intelligence (AGI) and artificial superintelligence (ASI), the resulting AI will allegedly provide us with an infinite number of AI-based Einsteins. We could then have Einstein-level intelligence massively available 24/7. The possibilities seem incredible and enormously uplifting. Let's talk about it. This analysis of an innovative AI breakthrough is part of my ongoing Forbes column coverage on the latest in AI, including identifying and explaining various impactful AI complexities (see the link here). There is a great deal of research going on to further advance AI. The general goal is to either reach artificial general intelligence (AGI) or maybe even the outstretched possibility of achieving artificial superintelligence (ASI). AGI is AI that is considered on par with human intellect and can seemingly match our intelligence. ASI is AI that has gone beyond human intellect and would be superior in many if not all feasible ways. The idea is that ASI would be able to run circles around humans by outthinking us at every turn. For more details on the nature of AI, AGI, and ASI, see my analysis at the link here. AI insiders are pretty much divided into two major camps right now about the impacts of reaching AGI or ASI. One camp consists of the AI doomers. They are predicting that AGI or ASI will seek to wipe out humanity. Some refer to this as 'P(doom),' which means the probability of doom, or that AI zonks us entirely, also known as the existential risk of AI. The other camp entails the so-called AI accelerationists. They tend to contend that advanced AI, namely AGI or ASI, is going to solve humanity's problems. Cure cancer, yes indeed. Overcome world hunger, absolutely. We will see immense economic gains, liberating people from the drudgery of daily toils. AI will work hand-in-hand with humans. This benevolent AI is not going to usurp humanity. AI of this kind will be the last invention humans have ever made, but that's good in the sense that AI will invent things we never could have envisioned. No one can say for sure which camp is right and which one is wrong. This is yet another polarizing aspect of our contemporary times. For my in-depth analysis of the two camps, see the link here. Let's momentarily put aside the attainment of ASI and focus solely on the potential achievement of AGI, just for the sake of this discussion. No worries -- I'll bring ASI back into the big picture in the concluding remarks. Imagine that we can arrive at AGI. Since AGI is going to be on par with human intelligence, and since Einstein was a human and made use of his human intelligence, the logical conclusion is that AGI would be able to exhibit the intelligence of the likes of Einstein. The AGI isn't especially simulating Einstein per se. Instead, the belief is that AGI would contain the equivalent of Einstein-level intelligence. If AGI can exhibit the intelligence of Einstein, the next logical assumption is that this Einstein-like capacity could be replicated within the AGI. We already know that even contemporary generative AI allows for the simulation of multiple personas, see my analysis at the link here. With sufficient hardware, the number of personas can be in the millions and billions, see my coverage at the link here. In short, we could have a vast number of Einstein-like intelligence instances running at the same time. You can quibble that this is not the same as saying that the number of Einsteins would be infinite. It would not be an infinite count. There would be some limits involved. Nonetheless, the infinite Einsteins as a catchphrase rolls off the tongue and sounds better than saying the millions or billions of Einsteins. We'll let the use of the word 'infinite' slide in this case and agree that it means a quite large number of instances. Einstein was known for his brilliance when it comes to physics. I brought this up because it is noteworthy that he wasn't known for expertise in biology, medicine, law, or other domains. When someone refers to Einstein, they are essentially emphasizing his expertise in physics, not in other realms. Would an AGI that provides infinite Einsteins then be considered to have heightened expertise solely in physics? To clarify, that would certainly be an amazing aspect. No doubt about it. On the other hand, those infinite Einsteins would presumably have little to offer in other realms such as biology, medicine, etc. Just trying to establish the likely boundaries involved. Imagine this disconcerting scenario. We have infinite Einsteins via AGI. People assume that those Einsteins are brilliant in all domains. The AGI via this capacity stipulates a seeming breakthrough in medicine. But the reality is that this is beyond the purview of the infinite Einsteins and turns out to be incorrect. We might be so enamored with the infinite Einsteins that we fall into the mental trap that anything the AGI emits via that capacity is aboveboard and completely meritorious. Some people are more generalized about the word 'Einstein' and tend to suggest it means being ingenious on an all-around basis. For them, the infinite Einsteins consist of innumerable AI-based geniuses of all kinds. How AGI would model this capacity is debatable. We don't yet know how AGI will work. An open question is whether other forms of intelligence such as emotional intelligence (EQ) get wrapped in the infinite Einsteins. Are we strictly considering book knowledge and straight-ahead intelligence, or shall we toss in all manner of intelligence including the kitchen sink? There is no debate about the clear fact that Einstein made mistakes and was not perfect. He was unsure at times of his theories and proposals. He made mistakes and had to correct his work. Historical reviews point out that he at first rejected quantum mechanics and vowed that God does not play dice, a diss against the budding field of quantum theory. A seemingly big miss. Would AGI that allows for infinite Einsteins be equally flawed in those Einsteins as per the imperfections of the modeled human? This is an important point. Envision that we are making use of AGI and the infinite Einsteins to explore new frontiers in physics. Will we know if those Einsteins are making mistakes? Perhaps they opt to reject ideas that are worthy of pursuit. It seems doubtful that we would seek to pursue those rejected ideas simply due to the powerful assumption that all those Einsteins can't be wrong. Further compounding the issue would be the matter of AI hallucinations. You've undoubtedly heard or read about so-called AI hallucinations. The precept is that sometimes AI generates confabulations, false statements that appear to be true. A troubling facet is that we aren't yet sure when this occurs, nor how to prevent it, and ferreting out AI hallucinations can be problematic (see my extensive explanation at the link here). There is a double-whammy about those infinite Einsteins. By themselves, they presumably would at times make mistakes and be imperfect. They also would be subject to AI hallucinations. The danger is that we would be relying on the aura of those infinite Einsteins as though they are perfect and unquestionably right. Would all the AGI-devised infinite Einsteins be in utter agreement with each other? You might claim that the infinite Einsteins would of necessity be of a like mind and ergo would all agree with each other. They lean in the same direction. Anything they say would be an expression of the collective wisdom of the infinite Einsteins. The downside there is that if the infinite Einsteins are acting like lemmings, this seems to increase the chances of any mistakes being given an overabundance of confidence. Think of it this way. The infinite Einsteins tell us in unison that there's a hidden particle at the core of all physics. Any human trying to disagree is facing quite a gauntlet since an infinite set of Einsteins has made a firm declaration. A healthy principle of science is supposed to be the use of scientific discourse and debate. Would those infinite Einsteins be dogmatic or be willing to engage in open-ended human debates and inquiries? Let's consider that maybe the infinite Einsteins would not be in utter agreement with each other. Perhaps they would among themselves engage in scientific debate. This might be preferred since it could lead to creative ideas and thinking outside the box. The dilemma is what do we do when the infinite Einsteins tell us they cannot agree? Do we have them vote and based on a tally decide that whatever is stated seems to be majority-favored? How might the intellectual battle amid infinite Einsteins be suitably settled? A belief that there will be infinite Einsteins ought to open our eyes to the possibility that there would also be infinite Issac Newton's, Aristotle's, and so on. There isn't any particular reason to restrict AGI to just Einsteins. Things might seem to get out of hand. All these infinite geniuses become mired in disagreements across the board. Who are we to believe? Maybe the Einsteins are convinced by some other personas that up is down and down is up. Endless arguments could consume tons of precious computing cycles. We must also acknowledge that evil doers of historical note could also be part of the infinite series. There could be infinite Genghis Khan's, Joseph Stalin's, and the like. Might they undercut the infinite Einsteins? Efforts to try and ensure that AI aligns with contemporary human values is a vital consideration and numerous pathways are currently being explored, see my discussion at the link here. The hope is that we can stave off the infinite evildoers within AGI. Einstein had grave concerns about the use of atomic weapons. It was his handiwork that aided in the development of the atomic bomb. He found himself mired in concern at what he had helped bring to fruition. An AGI with infinite Einsteins might discover the most wonderful of new inventions. The odds are that those discoveries could be used for the good of humankind or to harm humankind. It is a quandary whether we want those infinite Einsteins widely and in an unfettered way to share what they uncover. Here's the deal. Would we restrict access to the infinite Einsteins so that evildoers could not use the capacity to devise destructive possibilities? That's a lot harder to say than it is to put into implementation. For my coverage of the challenges facing AI safety and security, see the link here. Governments would certainly jockey to use the infinite Einsteins for purposes of gaining geo-political power. A nation that wanted to get on the map as a superpower could readily launch into the top sphere by having the infinite Einsteins provide them with a discovery that they alone would be aware of and exploit. The national and international ramifications would be of great consequence, see my discussion at the link here. I promised at the start of this discussion to eventually bring artificial superintelligence into the matter at hand. The reason that ASI deserves a carve-out is that anything we have to say about ASI is purely blue sky. AGI is at least based on exhibiting intelligence of the kind that we already know and see. True ASI is something that extends beyond our mental reach since it is superintelligence. Let's assume that ASI would not only imbue infinite Einsteins, but it would also go far beyond Einstein-level thinking to super Einstein thresholds. With AGI we might have a solid chance of controlling the infinite Einsteins. Maybe. In the case of ASI, all bets are off. The ASI would be able to run circles around us. Whatever the ASI decides to do with the infinite super Einsteins is likely beyond our control. Congrats, you've now been introduced to the infinite Einsteins conjecture. Let's end for now with a famous quote from Einstein. Einstein made this remark: 'Two things are infinite: the universe and human stupidity, and I'm not sure about the universe.' This highlights whether we could suitably harness an AGI containing infinite Einsteins depends upon human acumen and human stupidity. Hopefully, our better half prevails.

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