Wednesday, 14 October 2026

NASA Names Astronaut Christina Koch Acting Deputy Chief Engineer

NASA astronaut Christina Koch stands inside Kennedy Space Center’s Vehicle Assembly Building on July 14, 2021, in front of the agency’s Space Launch System (SLS) rocket that ultimately powered the Orion spacecraft on the Artemis I mission. Koch later served as a crew member on the Artemis II mission in 2026, and on Oct. 13, 2026, NASA announced she will serve next as the agency’s acting deputy chief engineer.
NASA astronaut Christina Koch stands inside Kennedy Space Center’s Vehicle Assembly Building on July 14, 2021, in front of the agency’s Space Launch System (SLS) rocket that ultimately powered the Orion spacecraft on the Artemis I mission. Koch later served as a crew member on the Artemis II mission in 2026, and on Oct. 13, 2026, NASA announced she will serve next as the agency’s acting deputy chief engineer.
NASA/Glenn Benson

NASA engineer and astronaut Christina Koch will serve as the agency’s acting deputy chief engineer beginning on Sunday, Nov. 1, following the retirement of Katherine Van Hooser, who will conclude more than 35 years of distinguished service to the agency on Wednesday, Oct. 21.

In her new role, Koch will help lead NASA’s engineering community, supporting technical oversight, mission readiness, and engineering excellence across the agency’s programs and projects. With this appointment, Koch will transition to management astronaut status and will no longer be eligible for future spaceflight assignments.

“Christina has seen NASA engineering from both sides of the equation: developing complex systems on the ground and trusting them with her life in space,” said NASA Administrator Jared Isaacman. “After spending nearly a year living and working aboard the International Space Station and helping lead America back around the Moon on Artemis II this year, she brings an extraordinary combination of technical expertise, operational experience, and judgment to this role. I am excited to see the impact she will have across NASA as we return Americans to the lunar surface, build the Moon Base, get underway on nuclear power in space, and develop the capabilities that will ultimately take us on to Mars.”

“Katherine has been an extraordinary leader throughout her career, bringing technical expertise, sound judgment, and an unwavering commitment to mission success to some of NASA’s most complex engineering challenges,” said Amit Kshatriya, NASA associate administrator and chief engineer. “Her leadership has strengthened our engineering community and helped guide the agency through critical milestones and transitions. Christina brings a unique combination of engineering expertise, operational experience, and proven leadership, both on the ground and in space. I am grateful to Katherine for her exceptional service and confident Christina will continue the tradition of technical excellence that is essential to everything we do at NASA.”

Koch most recently served as a mission specialist aboard NASA’s Artemis II mission in April, helping carry out the first crewed flight around the Moon in more than 50 years. She previously spent 328 consecutive days aboard the International Space Station, setting the record for the longest single spaceflight by a woman and participating in the first all-female spacewalks.

Koch began her NASA career as an electrical engineer at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, developing scientific instruments for space missions. Before her selection as an astronaut in 2013, her experience also included scientific field engineering in Antarctica and the Arctic. She has since held leadership positions within NASA’s Astronaut Office and at the agency’s Johnson Space Center in Houston, bringing a combination of technical expertise, operational experience, and firsthand understanding of the demands of human spaceflight to her new role.

Van Hooser joined NASA in 1991 at the agency’s Marshall Space Flight Center in Huntsville, Alabama, beginning a distinguished career in propulsion engineering and technical leadership. Her early work focused on liquid rocket engine turbomachinery before she became chief engineer for the space shuttle main engine, leading engineering efforts through the final 21 shuttle flights. She later served as the first chief engineer for the Space Launch System’s Liquid Engines Element, helping advance the propulsion systems supporting NASA’s Artemis missions.

As Marshall’s chief engineer and, since 2023, NASA’s deputy chief engineer, Van Hooser provided critical technical leadership and oversight across the agency’s programs. Her steady guidance through complex engineering challenges and organizational transitions helped maintain continuity, strengthen collaboration, and keep mission readiness at the forefront of NASA’s work.

Learn more about NASA’s missions on the agency’s website:

https://www.nasa.gov/

George Alderman / Cheryl Warner
Headquarters, Washington
202-358-1600
george.a.alderman@nasa.gov / cheryl.m.warner@nasa.gov

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Oct 13, 2026



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Perseverance Navcam Image Marks Record Drive

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Perseverance Navcam Image Marks Record Drive

Rover tracks press into the sand of a rocky, sloping Martian landscape, leading upward toward a distant ridge under a pale, hazy sky.
PIA26812
Credits:
NASA/JPL-Caltech

Description

Rover tracks and a rocky Martian landscape are shown in this image captured by one of the navigation cameras (navcams) aboard NASA’s Perseverance Mars rover on Oct. 11, 2026, the 2,006th Martian day, or sol, of the mission. During that sol’s drive, spanning 299.6 feet (91.31 meters), the mission passed a major milestone: pushing Perseverance’s total driving distance beyond that of the agency’s Opportunity rover, which logged 28.06 miles (45.16 kilometers) during its 15-year mission on Mars.

NASA’s Jet Propulsion Laboratory, which is managed for the agency by Caltech in Pasadena, California, built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate in Washington, as part of NASA’s Mars Exploration Program portfolio.

For more about Perseverance: https://science.nasa.gov/mission/mars-2020-perseverance/



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Tuesday, 13 October 2026

NASA Science, Cargo Launch on 35th SpaceX Resupply Mission to Station

A SpaceX Falcon 9 rocket and Dragon spacecraft launched on Tuesday, Oct. 13, 2026, from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida as part of the company’s 35th Commercial Resupply Services mission to the International Space Station for NASA.
Credit: NASA

NASA’s SpaceX 35th commercial resupply mission lifted off at 6:33 a.m. EDT Tuesday aboard a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida, carrying more than 6,300 pounds of supplies and hardware, bound for the International Space Station. Following its successful launch, the SpaceX Dragon spacecraft will carry new scientific experiments, cargo, and the final pair of International Space Station Roll-Out Solar Arrays to the orbiting laboratory.

Dragon is scheduled to autonomously dock at 11 a.m., Thursday, Oct. 15, to the space-facing port of the space station’s Harmony module. NASA will stream rendezvous and docking coverage beginning at 9:15 a.m., through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

The final pair of solar arrays will complete the space station’s power system augmentation, boosting available electricity for research, operations, and the station’s safe, controlled deorbit. Astronauts will install the arrays during a series of spacewalks planned for later this fall.

Dragon also is delivering several new experiments, including hardware to manufacture artificial retinas in microgravity that could help restore vision for patients on Earth and 3D heart tissue models to advance large-scale drug testing on future space missions. Dragon also will carry materials to study how a new type of glass is formed in microgravity, and brain organoids that could uncover potential treatment targets for neurodegenerative diseases like Alzheimer’s, Parkinson’s, and multiple sclerosis.

These are just a sample of the hundreds of investigations conducted aboard the orbiting laboratory in the areas of biology and biotechnology, physical sciences, and Earth and space science. Research and technology investigations taking place aboard the space station benefit people on Earth and lay the groundwork for other agency deep space missions. As part of NASA’s Artemis program, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring the world through discovery in a new Golden Age of innovation and exploration.

The Dragon spacecraft is scheduled to remain at the space station until mid-November when it will depart and return to Earth with time-critical research and cargo, splashing down off the coast of California.

Learn more about the International Space Station, its research, and crew, at:

https://www.nasa.gov/station

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Steven Siceloff
Kennedy Space Center, Fla.
321-876-2468
steven.p.siceloff@nasa.gov

Sandra Jones / Joseph Zakrzewski
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov / joseph.a.zakrzewski@nasa.gov



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An Impact Structure With Legs

Several short, light-colored rocky ridges radiate out from a central point amid an orange and tan desert landscape.

Editor’s Note: Today’s story is the answer to the October Puzzler.

From above, the mere appearance of a curious geologic feature in Western Australia is enough to cause a fright. The aptly named Spider Crater, the product of a meteorite impact followed by hundreds of millions of years of erosion, sprawls across the landscape in the country’s Kimberley region.

The OLI (Operational Land Imager) on the NASA-USGS Landsat 9 satellite captured this image of the crater on September 20, 2026. The full impact structure has an oval shape measuring about 13 kilometers by 11 kilometers (8 miles by 7 miles), with the spiderlike central portion measuring about 4 kilometers (2.5 miles) across.

Geologists believe the unusual arachnoid pattern is the remnant of a central uplift, the raised portion of the crater floor that formed in the rebound of the initial impact shock. The light-colored “legs” are sandstone ridges that have endured while other rock layers in the impact zone have eroded away.

For decades after the feature’s discovery, scientists struggled to weave a tale about its formation. Some proposed it had a volcanic past. But with some legwork in the field, geologists identified telltale signs of a past impact: fan-shaped fractures called shatter cones. These fractures form only when intense shock waves travel through rock, and they are ubiquitous in Spider Crater’s central dome.

Scientists have subsequently performed lab analyses of shocked quartz and zircon crystals from the sandstone, which can help them reconstruct the angle of the meteorite’s impact. The date of the impact is uncertain, but estimates based on rocks in the region place it between about 900 million and 600 million years ago—making Spider Crater a creature of the late Precambrian.

NASA Earth Observatory image by Michala Garrison, using Landsat data from the U.S. Geological Survey. Story by Lindsey Doermann.

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Several short, light-colored rocky ridges radiate out from a central point amid an orange and tan desert landscape.

September 20, 2026

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NASA’s SpaceX CRS-35 Mission to Launch Health Research

NASA experiments focused on human and plant health and drug-resistant organisms will travel to the International Space Station aboard SpaceX’s 35th Commercial Resupply Services mission for the agency from Cape Canaveral Space Force Station in Florida, advancing research that benefits life on Earth and future exploration.

This research supports astronaut health during long-duration missions through four investigations from the agency’s Biological and Physical Sciences division, including 3D models of the human brain, a crop disease study, a faster way to assess astronaut health, and an analysis of antibiotic-resistant bacteria aboard the space station.

Tiny brain models, big questions

A new precision health investigation helps address a key question: What happens to the human brain in space?

The experiment sends small, lab-grown models of the human brain to the orbiting laboratory for five weeks. Researchers compare tissue models that traveled to space with identical ones kept on Earth to determine how a short spaceflight affects the human brain at the cellular level.

The effort could deepen our understanding of how the human brain responds to stress and help lay the groundwork for methods that counter risks to brain health that astronauts may face on future missions to the Moon and beyond.

Disease-resistant crops for space

A space crops investigation tests whether crop diseases develop faster and more severely in microgravity.

The experiment compares molecular and structural changes between Earth-grown and space station-grown plants infected with a disease-causing fungus. The findings could guide plant breeding on Earth to produce disease-resistant crops and help minimize yield losses in future space agriculture systems.

Space crops provide nutrition, increase dietary variety, and offer psychological benefits for astronauts during extended missions. They also absorb carbon dioxide, produce oxygen, and recycle water, which will become increasingly important as human missions extend farther from Earth.

Analysis helps astronauts thrive

The spacecraft also carries the first test of a compact microplate reader that arrived aboard the space station earlier this year.

The Commercially Enabled Rapid Space Science initiative experiment tests the device’s ability to detect and measure certain biomarkers such as antibodies, antigens, and proteins.

Use of the plate reader would allow scientists to analyze samples aboard the space station and obtain data quickly, rather than wait for the samples to return to Earth for analysis.

Ultimately, the research aims to support the timely detection of infections and other health issues in astronauts while expanding science capabilities in remote exploration locations where resupply will be more difficult.

Tracking antibiotic-resistant bacteria

A precision health investigation returns for its fourth and final planned stay aboard the space station to study how antibiotic-resistant bacteria survive and evolve in microgravity.

As part of the investigation, astronauts repeatedly sample surfaces throughout the space station to monitor for drug-resistant organisms.

The work could help develop ways to protect astronauts against bacterial infections during long-duration missions. On Earth, the findings could provide insight into how superbugs develop from the overuse of antibiotics.

To learn more about NASA’s biological and physical research in space, visit: https://science.nasa.gov/biological-physical/

Biological & Physical Sciences Division

  • NASA’s Biological and Physical Sciences Division pioneers scientific discovery and enables exploration by using space environments to conduct investigations not possible on Earth. Studying biological and physical phenomena under extreme conditions allows researchers to advance the fundamental scientific knowledge required to go farther and stay longer in space, while also benefitting life on Earth.



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Monday, 12 October 2026

Antarctic Sea Ice Grows to Its 2026 Maximum

A map shows white Antarctic sea ice on September 14, 2026, the day it reached its annual maximum extent. The 1981–2010 median is outlined in yellow.
Antarctic sea ice reached its annual maximum extent on September 14, 2026—the third-lowest maximum in the satellite record.
NASA Earth Observatory/Michala Garrison

This story is an update to the Antarctic sea ice feature in our World of Change series tracking long-term change on Earth’s surface through satellite imagery.

Unlike the Arctic—an ocean basin surrounded by land—the Antarctic is a large continent surrounded by an ocean. Because of this geography, sea ice has more room to expand during the winter. However, that ice also stretches into warmer latitudes, leading to more melting in the summer. Antarctic sea ice usually peaks in September, around the end of the Southern Hemisphere’s winter, and retreats to a minimum in February.

According to NASA and the National Snow and Ice Data Center (NSIDC), Antarctic sea ice in 2026 likely reached its annual maximum extent on September 14 (above). On that date, the ice covered an estimated 17.59 million square kilometers (6.79 million square miles), making it the third-lowest maximum on record.

The maps below show the average concentration of Antarctic sea ice for the month of September (left) and the following February (right) from 1990 to 2026. Opaque white areas indicate the highest concentrations, and dark blue areas are open water. The images include only areas where ice concentration was at least 15 percent, a threshold scientists commonly use to count an area as ice-covered in satellite data. Scientists refer to the total area of these regions as the “sea ice extent.”

From Record Highs to Record Lows

From 1979 until 2014, total Antarctic sea ice increased by about 1 percent per decade. Whether the increase was a sign of meaningful change is uncertain because ice extents vary considerably from year to year around Antarctica. For three consecutive years, from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while Arctic ice was in steep decline.

The climb came to an end in 2015, and significant decreases in sea ice around Antarctica started to occur in 2016. There have since been years with small rebounds, but overall, Antarctic sea ice coverage has largely remained lower than normal. Both the record low minimum and record low maximum occurred in 2023. Scientists will continue to observe the area each year to find out if the decline is part of a long-term change or a statistical fluctuation.

A line chart of Antarctic sea ice extent shows the 1981–2010 average as a blue dashed line, 2023 (the lowest minimum and lowest maximum on record) in orange, and 2026 in red.

Seeing Through the Clouds

To determine sea ice extent, scientists rely on satellites with passive microwave sensors that measure the microwave energy Earth naturally emits. Sea ice emits more of this energy than open water, so it stands out in microwave images. Because microwaves pass through clouds, the satellites can observe sea ice regularly, regardless of weather.

The record began in late 1978 with data collected by NASA’s Nimbus-7, followed by Defense Meteorological Satellite Program (DMSP) satellites starting in 1987, and by NASA’s Aqua satellite between 2002 and 2011. In 2025, scientists began using observations from the Japan Aerospace Exploration Agency’s GCOM-W satellite. 

NASA Earth Observatory images by Michala Garrison, using data from the National Snow and Ice Data Center.

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A map shows white Antarctic sea ice on September 14, 2026, the day it reached its annual maximum extent. The 1981–2010 median is outlined in yellow.

September 14, 2026

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NASA Names Astronaut Christina Koch Acting Deputy Chief Engineer

NASA astronaut Christina Koch stands inside Kennedy Space Center’s Vehicle Assembly Building on July 14, 2021, in front of the agency’s Spac...