A coastwide index of Atlantic sturgeon abundance has been rising steadily since 2013, the Atlantic States Marine Fisheries Commission found in its 2024 stock assessment update, published in August 2024.

The update extends the commission’s 2017 benchmark assessment with data from 2016 to 2022. It combines nine fishery-independent surveys into a single index of relative abundance, which the commission describes as variable from 1990 to 2022.

The composite index had a 100 per cent probability of being above its 1998 value, the year a coastwide moratorium on Atlantic sturgeon fishing took effect, and showed a statistically significant positive trend over the time series. The probability that total mortality exceeded the assessment’s threshold was less than 2 per cent.

Several states had closed their Atlantic sturgeon fisheries in the mid to late 1990s. New York imposed its own statewide moratorium in 1997.

The increase appears as a steady upward trend in the composite index. Most of the nine individual surveys showed either no trend or an increase. The commission still rates Atlantic sturgeon as depleted relative to historic levels, both coastwide and in every regional population it assessed.

That term covers more than the directed fishing that ended in 1998. The commission said the term acknowledges bycatch mortality, ship strikes and reductions in productivity from habitat loss. Bycatch in other fisheries, for which data begin in the 2000s, has generally been decreasing in recent years, the update said, except for estimates from gill nets in the federal observer programme.

Results for individual populations were more mixed. The New York Bight and Carolina indices had average probabilities of 59 per cent and 77 per cent of sitting above their reference year values. The other three populations came in below 50 per cent, with the Chesapeake Bay lowest at 27 per cent. The Gulf of Maine had a 56 per cent probability that total mortality exceeded the threshold.

The Hudson River, part of the New York Bight population, is presumed to be one of the two healthiest Atlantic sturgeon populations in the United States, alongside the Altamaha, according to the New York State Department of Environmental Conservation’s species status assessment for its 2025 State Wildlife Action Plan.

The same document reports that the department has monitored juvenile Atlantic sturgeon in the Hudson since 2004 and built a relative abundance index from fish aged about one to six years. The trends in that survey were initially positive but have declined in recent years, the assessment says.

A New York juvenile survey covering 2004 to 2022 is one of the nine indices in the commission’s coastwide composite. Genetic work on more than 500 juvenile and subadult sturgeon caught at Haverstraw Bay between 2017 and 2022 assigned the majority to the Hudson River population. The commission said this indicates the long-term survey data collected at Haverstraw Bay primarily reflects demographic trends in the Hudson River population.

Earlier estimates cited by the department put the Hudson’s spawning population at about 870 adults a year, against 343 for the Altamaha. A study published in 2020 and cited in the commission’s update used side-scan sonar and acoustic telemetry to estimate the Hudson’s 2014 spawning run at 466 fish, with a 95 per cent confidence interval of 310 to 745.

The commission said that once reported spawning intervals are taken into account, the 2014 estimate appears similar to the earlier total adult population estimate.

Atlantic sturgeon were listed under the Endangered Species Act in February 2012. The New York Bight, Chesapeake Bay, Carolina and South Atlantic populations are designated endangered. The Gulf of Maine population is designated threatened. The species was reported present in 32 US rivers, with spawning in at least 14 of them, according to figures from 1998 cited in the New York assessment.

The Hudson’s Atlantic sturgeon are distinct from the river’s shortnose sturgeon, a separate species. On 27 June 2025 the department announced a study, coauthored by the US Geological Survey, that estimated the Hudson’s shortnose population at nearly 70,000, a figure that does not describe Atlantic sturgeon numbers.

The coastwide moratorium is meant to stay in force until each spawning stock has at least 20 protected year classes, a point the New York assessment says could take 40 years.

Sources:

• ASMFC, 2024 Atlantic Sturgeon Stock Assessment Update, August 2024
• NYSDEC, Species Status Assessment: Atlantic sturgeon (SWAP 2025)
• NYSDEC press release, 27 June 2025

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WASHINGTON, NASA has selected a radar, seismic, gravity and camera suite called GIMLI to be deployed at the Marius Hills Pit and test from the surface whether the pit opens into a lava tube.

The agency named GIMLI on 30 September 2026 as one of three payload suites chosen under its PRISM programme for the Moon Base effort, to fly on a commercial lander under the Commercial Lunar Payload Services scheme. No launch date and no lander vendor have been named. The principal investigator is Nathaniel Putzig of the Planetary Science Institute.

The pit lies in the Marius Hills, an ancient volcanic region. In 2017 a team using the Lunar Radar Sounder on Japan’s Kaguya spacecraft reported echoes near the pit that it interpreted as an intact lava tube, and candidate tube sites line up with mass deficits in gravity maps from the GRAIL spacecraft, the Japanese space agency said. None of that has shown whether the hole leads anywhere.

“Readers should not conclude that the pit is an opening to a lava tube,” Gareth Morgan, GIMLI’s deputy principal investigator at the institute, told Space Daily in an email on 19 October 2026.

High-resolution images from NASA’s Lunar Reconnaissance Orbiter show the pit walls “form an overhang above a subsurface void space that is wider than the diameter of the pit itself”, Morgan said. The size of that void is unknown, and so is whether it is an isolated cavity or part of a larger cave system.

Similar pits exist in volcanic terrain on Earth, Morgan said. “Sometimes they are skylights into lava tubes, but in other cases they are isolated shafts/cavities caused by volcanic-tectonic activity,” he said. “GIMLI has been designed to differentiate between the two scenarios.”

“It has long been speculated that lava tubes, which on Earth are remnants of drained lava flows, exist on the Moon, but this has never been definitively confirmed,” Morgan said. “GIMLI will enable us to address this for the first time.”

“Confirming these void spaces now could shift future habitat planning, offering natural, ready-made shelters that provide crucial thermal stability and shielding from deadly ionizing radiation and micrometeoroid bombardment,” the agency said in its 30 September 2026 release.

GIMLI’s ground-penetrating radar is supplied by the Norwegian Space Agency, according to the institute. Honeybee Robotics, a Blue Origin company, is building the active-source seismic system, the gravimeter and the cameras, and is managing the project.

Each instrument should respond to a tunnel in its own way, Putzig told Space Daily in an email on 19 October 2026. “With the ground-penetrating radar, we would expect a strong reflection from the top of the lava tube back to the antenna, due to the high dielectric contrast between rock and the vacuum within the lava tube,” he said.

“For the active-source seismic, we would expect strong reflected and refracted acoustic waves from the perimeter of the lava tube, but the acoustic waves will not pass through the void space,” Putzig said. “For the gravimeter, we would expect to see a strong, negative gravity anomaly when passing over the lava tube, as it represents a locally reduced mass in what is otherwise dense rock.”

“If we see all of these effects, it will represent very strong evidence that the pit does in fact represent a collapse feature into a much more extensive lava tube,” he said.

Elevator and sealed walls

Published figures for the pit’s depth disagree. NASA’s description of the orbiter’s images puts the pit at about 34 metres deep. The Lunar Reconnaissance Orbiter Camera team gives 40 metres in a 2017 update. Putzig put the drop at about 60 metres.

“There’s a sharp drop of about 60 m between the pit rim and the floor of the pit, so while first explorations could be done by flying or rappelling into the pit, it may become necessary to install an elevator to move people and equipment in and out of a shelter,” Putzig said.

“Creating a shelter would require walling off either end of a portion of the lava tube and pressurizing the interior, but cross-cutting fractures could make it necessary to seal off the tube walls as well to avoid leaks,” he said.

In July 2022 NASA reported that Diviner data from the orbiter and computer modelling showed shaded locations within some lunar pits “always hover around a comfortable 63 F (about 17 C)”. Radiation shielding inside the Marius Hills Pit has not been measured on site.

Morgan said a null result would still be useful. “If we don’t find evidence of a cave system at our Marius Hills landing site, our measurements will still allow us to test alternative hypotheses for lunar pit formation, which in turn will provide new insights into volcanic activity, such as localized volcanic-tectonic processes,” he said.

The pit walls also expose layers of rock. The suite’s camera mast “will be used to inspect these outcrops (from a safe distance) to measure the number, thickness and origin of the layers”, Morgan said, with the results compared against the geophysical surveys to reconstruct the site’s sequence of eruptions.

Sources:

• https://www.nasa.gov/news-release/nasa-adds-new-science-investigations-for-moon-base/
• https://www.psi.edu/blog/psi-led-team-selected-for-nasa-prism-program/
• https://www.isas.jaxa.jp/en/topics/001159.html
• https://lroc.im-ldi.com/image_tags/Pits
• https://lroc.im-ldi.com/images/202
• https://www.nasa.gov/solar-system/nasas-lro-finds-lunar-pits-harbor-comfortable-temperatures/
• https://www.esa.int/ESA_Multimedia/Images/2020/02/Marius_Hills_pit

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NASA Administrator James Webb pressed Manned Spacecraft Center director Robert Gilruth for a report on whether John Young should be disciplined for smuggling a corned beef sandwich onto Gemini III, NASA’s History Office says.

Young had fellow astronaut Walter “Wally” Schirra, the backup command pilot, buy the sandwich, then pocketed it in his pressure suit as he headed to the launchpad on March 23, 1965, Jennifer Ross-Nazzal, NASA’s human spaceflight historian, wrote in the History Office essay on March 20, 2025.

Nearly two hours into a flight of almost five hours, Young offered it to commander Gus Grissom, historian James Anderson wrote in a NASA Ames essay published on March 17, 2022. Grissom took a bite, found the rye crumbling, and put the sandwich in his own suit pocket.

The whole exchange lasted less than a minute. Congress raised the matter with NASA leadership at hearings on the agency’s 1966 budget, Ross-Nazzal wrote.

Webb told the committee that “this is the United States of America’s space program and, as a matter of policy, we are not going to permit individuals to superimpose their judgment as to what is going to be taken on these flights.”

He added: “I think it is fine for Dr. Gilruth to take a very strong position with respect to the individuality of these men, but from those of us who have to look at the totality of the matter, this was not an adequate performance by an astronaut.”

Representative George E. Shipley likened the Gemini cabin to a “surgeon’s operating room” and called Young’s antics “foolish”. Crumbs behind an instrument panel could interfere with flight equipment and cost the mission and its crew.

George Mueller, associate administrator for Manned Space Flight, told the committee that NASA did not “approve [of] unauthorized objects such as sandwiches going on board the spacecraft.” He said the agency had “taken steps, obviously, to prevent recurrence of corned beef sandwiches in future flights.”

Mueller also said: “There was no detriment to the experimental program that was carried on, nor was there any detriment to the actual carrying out of the mission because of the ingestion of the sandwich.”

Gilruth defended the crew. Such antics, he told the committee, helped crews “break up the strain” of spaceflight.

Gilruth said he hesitated “to be too strict in the future by laying down a lot of rules for men who have this responsibility and who, in all the flights so far, have done such good jobs.”

Webb read the incident as a sign that Gilruth was too lax with his astronauts, Ross-Nazzal wrote, and pressed him for a report to determine whether Young should be disciplined or at the very least reprimanded. Young never received a formal reprimand.

The sea urchin experiment

Near the approved food box beside Grissom sat a canister of sea urchin eggs, Arbacia punctulata, Anderson wrote. It was NASA’s first fundamental space biology experiment in orbit.

The canister held eight identical chambers. Turning its handle was meant to start fertilization in specific chambers, with a fixative halting cell division at different stages through the flight.

The handle broke when Grissom turned it, and the experiment’s objectives were not achieved. NASA redesigned the canister, substituted frog eggs, and flew it on Gemini VIII and Gemini XII.

By the end of the program, cell division had been shown to occur in microgravity without detrimental effects attributable to lower gravity.

Gemini III had none of the strict diet controls that other Gemini experiments on astronauts often required, so a few bites of the sandwich “would not have disrupted any of the planned experiments,” Anderson wrote.

Young hatched the idea during training, when Grissom grew “bored” with the dehydrated food, Ross-Nazzal wrote. Bringing a sandwich “seemed like a fun idea at the time” to Young.

One goal of the flight was to test NASA’s food packaging and its waste disposal procedures. Young called the chicken bites “barely edible” in his post-flight debriefing.

On the air-to-ground recordings, Grissom asked, “Where did that come from?” Young said: “I brought it with me.” He added: “Let’s see how it tastes.” Then: “Smells, doesn’t it?”

Two days after the flight, reporter Bill Hines asked at the postflight press conference what became of the sandwich. “How did you find out about that?” Young said, then laughed and said Grissom “ate the sandwich.”

Starting with Gemini IV, crews had to submit a list of items they planned to carry. Sandwiches were prohibited, along with bulky, heavy or metal objects that could affect spacecraft equipment.

The incident did not harm Young’s career. He became the first astronaut to fly to space six times, on two Gemini, two Apollo and two space shuttle missions. He also served as chief of the Astronaut Office for 13 years.

Sources:

• NASA History Office, Jennifer Ross-Nazzal, “Fallout from the Unauthorized Gemini III Space Sandwich”: https://www.nasa.gov/history/fallout-from-the-unauthorized-gemini-iii-space-sandwich/
• NASA Ames, James Anderson, “Contraband Corned Beef and the Early Days of Space Biology: the Gemini III Mission”: https://www.nasa.gov/centers-and-facilities/ames/contraband-corned-beef-and-the-early-days-of-space-biology-the-gemini-iii-mission/

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Austin, Texas: A meteorite impact buried under the town of Ames, Oklahoma, struck about 370 million years ago, nearly 100 million years later than previously believed, University of Texas at Austin researchers have found.

The study, published in July 2026 in Meteoritics & Planetary Science as an open access paper, dated zircon crystals from granite struck by the impact. Zircon is a mineral that forms small crystals and is used in uranium-lead dating.

The earlier age of 467 million years placed the impact in the Ordovician period. It was grouped with a series of North American impacts centred around 467.5 million years ago, called the Ordovician Meteor Event, according to a University of Texas press release.

The new date puts Ames in the Late Devonian, close to the Frasnian-Famennian mass extinction about 372 million years ago. The release says that event led to the extinction of a huge percentage of marine life on Earth.

Whether the impact and the extinction are connected remains an open question.

“Our results establish a new hypothesis that the Ames impact is linked to the Late Devonian mass extinction, but they do not demonstrate the causal relationship,” Elizabeth Catlos, lead author and associate professor in the Department of Earth and Planetary Sciences at UT’s Jackson School of Geosciences, said in an email.

“Establishing this connection requires additional evidence, such as finding impact-related material in Late Devonian sedimentary rocks, identifying other impact structures of this age and understanding their environmental consequences,” she said.

Catlos said she had “a high degree of confidence in the age”. It came from two independent radiometric dating approaches, laser ablation and ion-beam methods, applied to zircon grains taken directly from the impacted granite, she said.

For an impact structure, the strongest age constraint comes from dating minerals in the impacted material directly and showing that they record the impact, she said. That is what the team did.

“No matter what technique we used, it was coming back to this younger signal,” Catlos said in the university’s press release. The release says the result means Ames could not have been part of the Ordovician Meteor Event.

Doubts over the fossil date

The old date was biochronological, meaning it came from fossils. Researchers had found teeth of conodonts, eel-like creatures that lived during the Ordovician, in rock from the site. The teeth were probably already millions of years old when the asteroid struck and got jumbled in the impact, Catlos said in the release.

Catlos said in an email that she does not question the identification of the Ordovician conodonts. “The issue is whether they remain in their original stratigraphic position and can therefore reliably date the impact itself,” she said.

The conodont evidence came from a conference abstract and a PhD dissertation, Catlos said. Those sources did not go through the same formal peer review as a journal paper, but they gave the historical basis for assigning an Ordovician age to the structure.

To show the zircons recorded the impact, the team worked with NASA to image the crystals using cathodoluminescence and electron backscatter diffraction, two imaging methods. A zircon hit by an impact recrystallises in a specific way that these methods reveal, the release says.

Danny Stockli, dean of the Jackson School and a co-author, said in the release that uranium-lead dating of zircon is the most accurate way to tell when such events occurred. Microstructures in zircon can also record the shock pressures of impacts, he said.

He said he would like to see the same done for more impact sites across the continent to build a more accurate timeline of these events.

Catlos said in the release that a more accurate timeline for mass extinctions and other big moments in Earth’s history is needed to understand how the planet works. The question is whether such extinctions were driven by an extraterrestrial force or an interior one such as a series of massive volcanic eruptions, she said.

In her email, Catlos said the findings allow researchers to investigate a possible connection that had not been considered before.

The work was begun by Andrew Parisi, a Jackson School graduate student who collected the Ames rock core from the Oklahoma Geological Survey, extracted the zircons and helped date them. He graduated in 2018 and has since died, as has co-author Michael Brookfield. Sean Gulick and Mark Cloos of the Jackson School also contributed.

The Ames impact structure is a major oil and gas producer, the release says. The crater is more than eight miles wide and lies about 20 miles southwest of Enid under 9,000 feet of sediment, according to the American Oil & Gas Historical Society.

It went unrecognised until 1991, when Continental Resources found an oilfield there. Many geologists had believed impact craters were unlikely places for petroleum, the society says.

Sources:

• Catlos et al., Meteoritics & Planetary Science, July 2026: https://doi.org/10.1111/maps.70191
• UT Jackson School of Geosciences press release, 28 Sep 2026: https://www.jsg.utexas.edu/news/2026/09/meteor-hit-oklahoma-100-million-years-later-than-previously-thought/
• American Oil & Gas Historical Society, Ames Astrobleme Museum: https://aoghs.org/energy-education-resources/ames-astrobleme-oil-museum/

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