Artemis II Nears Splashdown After Historic Lunar Voyage: NASA’s Artemis II crew entered the final phase of their return to Earth as Orion prepared for re-entry and splashdown in the Pacific off San Diego. Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen woke to music chosen by the crew and were more than 61,000 miles from Earth as they readied for a final trajectory correction burn. NASA outlined a tightly timed descent sequence, including crew module separation, atmospheric entry, a brief communications blackout, parachute deployment, and splashdown at 8:07 p.m. EDT. Recovery teams from NASA and the U.S. military were set to extract the astronauts and transport them to the USS John P. Murtha before medical evaluations and return to Houston. The mission marked humanity’s first crewed lunar flyby since 1972 and a major test of Orion in deep space. (NASA)

Helium Leak Prompts Extra Artemis II Testing, Not Mission Alarm: NASA adjusted the Artemis II timeline to study a small internal helium leak in Orion’s European-built service module, canceling a manual piloting demonstration so engineers could gather more propulsion data. The leak affects the oxidizer-side pressurization system, but officials said it has not degraded performance and does not threaten the crew’s return because Orion’s crew module has its own independent reentry control system. Mission managers had already known of a low helium leak rate before launch and had seen a similar issue on Artemis I, but the in-flight leak rose to about an order of magnitude above ground observations. NASA now views the issue less as a near-term danger than as a design and production problem that likely must be addressed before later lunar-orbit missions, particularly Artemis IV. (Ars Technica)

Oldest Octopus Fossil Turns Out to Be an Octopus: A fossil once celebrated as the oldest known octopus has been reclassified after new imaging showed it was actually a flattened, decomposed nautiloid. Pohlsepia mazonensis, from Illinois’ Mazon Creek deposits and dating to roughly 311 to 306 million years ago, had long puzzled paleontologists because it seemed far older than other known crown coleoids. Thomas Clements and colleagues used synchrotron X-rays, scanning electron microscopy, micro-CT, and multispectral imaging to test the fossil’s anatomy and chemistry. Those methods undermined the octopus interpretation, showing that its supposed fins, arms, ink sac, and eyespots were misleading mineral patterns. The decisive clue was a hidden radula whose tooth arrangement matched nautiloids. Rather than rewriting octopus evolution, Pohlsepia now stands as unusually clear evidence of ancient nautiloid soft tissue. (Ars Technica)

Immune Aging Looks Different in Women and Men: One of the strongest longevity stories this morning comes from Nature Aging, where researchers used single-cell profiling across nearly 1,000 people to show that immune aging does not unfold the same way in women and men. The study points to sex-specific shifts in inflammation, autoimmunity, and disease risk, with broader age-related immune remodeling reported in female participants. That matters because immunosenescence is often discussed as a single process, when in reality it may follow different biological trajectories that could eventually require different screening tools, prevention strategies, or therapies. For longevity science, this is a reminder that “healthy aging” cannot be treated as a single template. If replicated and extended, the findings could reshape how geroscience thinks about personalized aging interventions. (Nature)

Aging Liver Cells May Help Cancer Spread: Another notable Nature Aging paper links aging biology directly to cancer progression. The researchers report that senescent hepatocytes, or aging liver cells, release extracellular vesicles carrying microRNAs that increase metastatic potential in tumor-bearing aged mice. In plain terms, the aging liver may not simply decline passively; it may help create a biological environment that makes cancers more likely to spread. That is a significant reframing. Longevity science often emphasizes extending healthspan by targeting senescence, but this work suggests those efforts could also have implications for oncology in older adults. The story sits right at the junction of geroscience and cancer biology, and it adds to the growing sense that aging tissues actively influence disease behavior rather than merely serving as worn-down background conditions. (Nature)

Severe Infections Again Emerge as a Dementia Risk Signal: A timely aging-and-brain-health story comes via The Lancet Healthy Longevity, which highlights a Finnish nationwide registry study showing that severe infections remained associated with higher dementia risk even after accounting for many other illnesses that could confound the relationship. The underlying PLOS Medicine paper examined more than 62,000 dementia cases and over 312,000 matched controls, finding that hospital-treated cystitis and unspecified bacterial infections retained a measurable association with later dementia. The effect was modest, and the study is observational, so it does not prove causation. Still, it strengthens an increasingly important idea in longevity medicine: infection prevention may be relevant not only to acute survival, but also to cognitive aging. It also reinforces the broader link between inflammation, systemic stress, and neurodegenerative vulnerability. (The Lancet)

Reproductive Longevity Gets a Focused Update on Oocyte Aging: Fresh from GeroScience, a new open-access review puts reproductive longevity back in the spotlight by examining how environmental and endogenous stressors drive oocyte aging. This may sound specialized, but it reaches into one of the most important longevity themes: how aging operates differently across tissues and life stages. Egg quality is not simply a question of fertility timing; it is also a window into mitochondrial strain, oxidative stress, genomic instability, and cumulative cellular damage. The review appears positioned as a synthesis rather than a single experimental breakthrough, but those syntheses matter because they organize a field and clarify where intervention might be possible. In the longer run, reproductive aging is likely to remain a major frontier for translational geroscience, especially as researchers pursue ways to preserve function rather than merely document decline. (Springer)

Blood Fatty Acids Shift Predictably with Age: A newly published Frontiers in Aging clinical study adds a useful metabolic layer to longevity reporting. Working with 1,277 patients in Germany, the researchers measured plasma and erythrocyte fatty-acid profiles and found consistent age-related trends, including higher total omega-3 levels and lower total omega-6 levels in older participants, alongside shifts in proxy indices for desaturation and elongation pathways. This is not a flashy “anti-aging breakthrough,” but it is exactly the kind of careful metabolic mapping that longevity science needs. The study does not prove that these lipid signatures cause healthy or unhealthy aging, and the authors note limits including the cross-sectional design and missing diet and genetic data. Still, it offers a richer biochemical picture of how aging alters lipid metabolism and may help refine future biomarker panels. (Frontiers In)

Aging Clocks May Fluctuate More Than the Field Likes to Admit: One of the more conceptually important longevity items this week is a report on biological age clocks and their short-timescale instability. Longevity.Technology highlights work discussed by Raghav Sehgal and Albert Higgins-Chen suggesting that many epigenetic clocks may show substantial day-to-day variation. That does not mean the clocks are useless, but it does raise a serious question for the field: what exactly are they measuring when they jump over the course of 24 hours? If biological-age tools are to guide clinical trials, consumer testing, or intervention claims, they need to distinguish meaningful biology from noise, transient physiology, or sampling variability. For a sector hungry for metrics, this is a healthy corrective. Better clocks may still be foundational to longevity medicine, but only if their stability and meaning are established more rigorously. (Longevity)

Mitochondria Keep Pushing Toward Center Stage in Longevity: Another useful longevity read this week argues that mitochondrial dysfunction is increasingly being treated not as one aging hallmark among many, but as a central organizing problem across tissues. In Longevity.Technology, Stealth BioTherapeutics’ David Brown makes the case that if one places mitochondrial dysfunction at the center of the aging map, its manifestations in brain, heart, and muscle begin to look less like separate disease silos and more like a connected bioenergetic story. This is partly an industry narrative, but it tracks with a real current in geroscience: the idea that energy handling, redox balance, and organelle quality control may sit near the core of age-related decline. The significance here is not a single trial result; it is the continued consolidation of mitochondria as a translational target. (Longevity)

NASA Says Forest Loss Can Now Be Detected Up to 100 Days Earlier: Moving beyond longevity, one of the stronger science-and-technology stories this week comes from NASA Earth Observatory. Scientists have developed a system that combines data from multiple Earth-observing satellites to detect forest clearing up to 100 days earlier than existing methods. That kind of lead time is not trivial. Earlier detection can change how regulators, conservation groups, and governments respond to deforestation, especially in regions where forest loss accelerates quickly and enforcement windows are narrow. It is also a good example of space-based science translating into operational environmental governance. Satellite constellations are no longer just about seeing the planet; they are increasingly about seeing it fast enough to act. In climate and biodiversity reporting, that shift from observation to near-real-time intervention may be one of the decade’s most important quiet revolutions. (NASA)

AI Drug Screening Tool Claims a Huge Speed Gain: On the biotech-computation front, a new model called Matcha is getting attention for claiming to make virtual drug screening more than 30 times faster than AlphaFold-class co-folding approaches while maintaining strong accuracy and better physical plausibility. According to the report, the system can process a protein-ligand complex in about 13 seconds, compared with roughly 6.5 minutes for AlphaFold3, and could screen millions of compounds in under eight days rather than several months. There is an important caveat: this is still a preprint-centered story, not a mature clinical platform. Even so, it is notable because early drug discovery is often bottlenecked by screening scale, computational cost, and false leads. If the performance holds up, tools like this could materially change how mid-sized labs and companies approach candidate discovery. (phys.org)

Scientists Found a Way to Make Bulk Silicon Emit Light More Efficiently: A physics story with major technology implications: researchers report that momentum-engineered photonic states can make bulk silicon shine by opening a radiative pathway that helps indirect semiconductors emit light more effectively. That may sound esoteric, but it gets at a long-standing problem in electronics. Silicon is the foundation of modern computing, yet it has been a poor light emitter, which has complicated efforts to merge photonics and electronics on the same platform. This work suggests a route around that limitation by engineering the light-matter interaction itself rather than redesigning the material from scratch. If the principle scales, it could help push forward integrated silicon photonics, with implications for communications, optical computing, and neuromorphic systems. It is one of the week’s more quietly consequential tech stories. (phys.org)