A Siberian Snowman in Billings

A Siberian Snowman in Billings

A Landsat image of Russia’s Chukchi Peninsula shows a narrow coastal sandspit separating the Arctic Ocean from a chain of elongated, ice-covered coastal lagoons near the village of Billings and Cape Billings. The pale blue lagoons vary in size and line up end-to-end, creating a shape that resembles a snowman pressed against the shoreline. Offshore, fractured sea ice forms a bright, textured band along the coast, while darker tundra and thermokarst lakes extend inland.
June 16, 2025

Icons of winter are sometimes found in unexpected places. In one striking example, a series of oval lagoons in a remote part of Siberia forms the shape of a towering snowman when viewed from above.

This image, centered on the remote village of Billings and nearby Cape Billings on Russia’s Chukchi Peninsula, was captured by the OLI (Operational Land Imager) aboard Landsat 8 on June 16, 2025. Established in the 1930s as a port and supply point for the Soviet Union, the village sits on a narrow sandspit that separates the Arctic Ocean from a series of connected coastal inshore lagoons.

The elongated, oval lagoons are frozen over and flanked by sea ice. Though June is one of the warmest months in Billings, ice cover is routine even then. Mean daily minimum temperatures are just minus 0.6 degrees Celsius (30.9 degrees Fahrenheit) in June, according to meteorological data.   

Though the shape may seem engineered, it is natural and the product of geological processes common in the far north. The ground in this part of Siberia is frozen most of the year and pockmarked with spear-shaped ice wedges buried under the surface. Summer melting causes overlying soil to slump, leaving shallow depressions that fill with meltwater and form thermokarst lakes. Once created, consistency in the direction of the winds and waves likely aligned and elongated the lakes into the shapes seen in the image. The thin ridges separating the lakes may represent the edges of different ice wedges below the surface.

The first reference to humans building snowmen dates back to the Middle Ages, according to the book The History of the Snowman. While three spherical segments are the most common form, other variants dominate in certain areas. In Japan, snowmen typically have just two segments and are rarely given arms. This five-segmented snowman-shaped series of lakes spans about 22 kilometers (14 miles) from top to bottom, making it roughly 600 times longer than the actual snowwoman that held the Guinness record for being the world’s tallest snowperson in 2025.

Snowmen are not the only winter icons tied to this remote landscape. For early expeditions to the Russian Arctic, reindeer offered one of the most reliable modes of transportation. That includes expeditions by the town’s namesake, Commodore Joseph Billings, a British-born naval officer who enlisted in the Russian navy and led a surveying expedition to find a Northeast Passage between 1790 and 1794.

Although the hundred-plus members of the expedition did not reach Cape Billings, they explored much of the Chukchi Peninsula, producing some of the first accurate maps and further confirming that Asia and North America were separated by a strait. In the winter months, when their ships were beset by ice, the explorers moved to temporary camps on land and instead surveyed the region with reindeer-drawn wooden sleds, according to historical accounts. Winters, in fact, offered the best conditions for exploration because the peninsula’s many rivers and lakes turned into solid surfaces that were easy to traverse in comparison to the muddy bogs that open up in the summer.

Indigenous Chukchi people living on the peninsula at the time routinely used reindeer to haul both people and cargo. A pair of reindeer can comfortably haul hundreds of pounds for several hours a day. In addition to their impressive endurance in cold temperatures, reindeer largely feed themselves by digging through snow and grazing on lichens, something that neither sled dogs nor horses can do.

Historical documents indicate that the Billings expedition enlisted Chukchi people to manage and care for the reindeer they used, with some accounts suggesting that the explorers used dozens of reindeer at times. While reindeer were mainly used to haul sleds, Chukchi people likely rode them as well.

Non-Chukchi members of the expedition reportedly experimented with riding reindeer, though their experiments did not always go smoothly. Billings’ secretary and translator Martin Sauer reported using a saddle without stirrups or a bridle and falling “nearly 20 times” after about three hours of travel in his account of the expedition. Not only that, he added, but the saddle “at first, causes astonishing pain to the thighs.”

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

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Stem Cells, Robotics, and Spacesuits Top Station Crew Day

Stem Cells, Robotics, and Spacesuits Top Station Crew Day

NASA astronaut and Expedition 73 Flight Engineer Zena Cardman inspects a spacesuit helmet during maintenance activities inside the International Space Station's Quest airlock.
NASA astronaut and Expedition 73 Flight Engineer Zena Cardman inspects a spacesuit helmet during maintenance activities inside the International Space Station’s Quest airlock.
NASA

Stem cell research, a student robotics challenge, and spacesuit maintenance dominated the schedule aboard the International Space Station on Tuesday. The Expedition 74 crew also rounded out its shift with Earth observations and cargo transfers throughout the day.

Repairing damaged organs or tissues is a key objective for a technology demonstration taking place onboard the orbital outpost that seeks to transform stem cells into any human cell type that are superior to those manufactured on Earth. The stem cells are reprogrammed from adult skin or blood cells and may lead to advances in regenerative medicine and cancer therapies. Station Commander Mike Fincke treated samples for the stem cell tech demo inside the Kibo laboratory module’s Life Science Glovebox then prepared them for preservation in cold stowage. The experiment hardware and research samples were launched to the station in October aboard JAXA’s (Japan Aerospace Exploration Agency) HTV-X1 cargo craft.

JAXA Flight Engineer Kimiya Yui spent his shift testing a pair of small robotic helpers ahead of an upcoming student challenge to program and maneuver the free-flying devices on the station. The main objective was a technical rehearsal of the toaster-sized Astrobee’s ability to identify and find hidden objects throughout the Kibo lab. The second objective was to monitor the Int-Ball 2, a small sphere-shaped robotic camera designed by JAXA, as it autonomously worked alongside Astrobee and recorded its search activities. Code written by student teams will operate the two robots together and will be judged for its accuracy, speed, and efficiency.

NASA Flight Engineers Zena Cardman and Chris Williams partnered together during the first half of their shift on Tuesday and resized a pair of spacesuits inside the Quest airlock. The duo adjusted the suits’ arms, legs, and waist ahead of a pair of maintenance spacewalks planned for early 2026. Afterward, Cardman moved on and cleaned and inspected hatch seals throughout the space station’s U.S. segment. Williams assisted Fincke and Yui during the second half of their shift as they loaded the HTV-X1 cargo craft with obsolete science hardware before the resupply ship’s departure in late January.

Roscosmos cosmonauts Oleg Platonov and Sergei Mikaev took part in a pair of Earth observation activities documenting the effects of natural and man-made conditions on the ground. Platonov turned off and uninstalled imagery hardware that automatically photographed landmarks from Asia to Africa during the crew’s sleep shift. Mikaev set up a digital multi-spectral camera linked to hardware that automatically operates and aligns the camera to target specific locations on Earth.

Roscosmos Flight Engineer Sergey Kud-Sverchkov, on his second spaceflight, spent Tuesday inside the Nauka science module cleaning smoke detectors ensuring the safety gear operates in tip-top shape. Kud-Sverchkov also spent a few moments with his cosmonaut crewmates Platonov and Mikaev reviewing procedures for unlikely emergency events such as a depressurization, a chemical leak, or a fire onboard the orbital outpost.

Learn more about station activities by following the space station blog, @space_station on X, as well as the ISS Facebook and ISS Instagram accounts.

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Mark A. Garcia

NASA IXPE’s Longest Observation Solves Black Hole Jets Mystery

NASA IXPE’s Longest Observation Solves Black Hole Jets Mystery

4 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

The Perseus Cluster. Left: Imaging X-ray Polarimetry Explorer (IXPE); Right: Chandra X-ray Observatory.
Two composite images show side-by-side observations of the Perseus Cluster from NASA’s IXPE (Imaging X-Ray Polarimetry Explorer) and Chandra X-ray Observatory. Scientists used data from both observatories, along with data from Nuclear Spectroscopic Telescope Array (NuSTAR), and Neil Gehrels Swift Observatory, to confirm measurements of the galaxy cluster.
X-ray: (Chandra) NASA/CXC/SAO, (IXPE) NASA/MSFC; Image Processing: NASA/CXC/SAO/N. Wolk and K. Arcand

Written by Michael Allen

An international team of astronomers using NASA’s IXPE (Imaging X-ray Polarimetry Explorer) has identified the origin of X-rays in a supermassive black hole’s jet, answering a question that has been unresolved since the earliest days of X-ray astronomy. Their findings are described in a paper published in The Astrophysical Journal Letters, by the American Astronomical Society, Nov. 11.

The IXPE mission observed the Perseus Cluster, the brightest galaxy cluster i observable in X-rays, for more than 600 hours over a 60-day period between January and March. Not only is this IXPE’s longest observation of a single target to date, it also marks IXPE’s first time observing a galaxy cluster.

Specifically, the team of scientists studied the polarization properties of 3C 84, the massive active galaxy located at the very center of the Perseus Cluster. This active galaxy is a well-known X-ray source and a common target for X-ray astronomers because of its proximity and brightness.

Because the Perseus Cluster is so massive, it hosts an enormous reservoir of X-ray emitting gas as hot as the core of the Sun. The use of multiple X-ray telescopes, particularly the high-resolution imaging power of NASA’s Chandra X-ray Observatory was essential to disentangle the signals in the IXPE data. Scientists combined these X-ray measurements with data from the agency’s Nuclear Spectroscopic Telescope Array (NuSTAR) mission and Neil Gehrels Swift Observatory.

Fast facts

  • Polarization measurements from IXPE carry information about the orientation and alignment of emitted X-ray light waves. The more X-ray waves traveling in sync, the higher the degree of polarization.
  • X-rays from an active galaxy like 3C 84 are thought to originate from a process known as inverse Compton scattering, where light bounces off particles and gains energy. The polarization measurements from IXPE allow us to identify the presence of either inverse Compton scattering or other scenarios.
  • “Seed photons” is the term for the lower-energy radiation undergoing the energizing process of inverse Compton scattering.
  • You may remember the Perseus Cluster from this sonification replicating what a Black Hole sounds like from May 2022.

“While measuring the polarization of 3C 84 was one of the key science goals, we are still searching for additional polarization signals in this galaxy cluster that could be signatures of more exotic physics,” said Steven Ehlert, project scientist for IXPE and astronomer at NASA’s Marshall Space Flight Center in Huntsville.

Chandra & IXPE composite image of the Perseus Cluster.
Chandra & IXPE composite image of the Perseus Cluster.
X-ray: (Chandra) NASA/CXC/SAO, (IXPE) NASA/MSFC; Image Processing: NASA/CXC/SAO/N. Wolk and K. Arcand

“We’ve already determined that for sources like 3C 84, the X-rays originated from inverse Compton scattering,” said Ioannis Liodakis, a researcher at the Institute of Astrophysics – FORTH in Heraklion, Greece, and lead author on the paper. “With IXPE observations of 3C 84 we had a unique chance to determine the properties of the seed photons.”

The first possible origin scenario for the seed photons is known as synchrotron self-Compton, where lower-energy radiation originates from the same jet that produces the highly energetic particles.

In the alternative scenario known as external Compton, seed photons originate from background radiation sources unrelated to the jet.

“The synchrotron self-Compton and external Compton scenarios have very different predictions for their X-ray polarization,” said Frederic Marin, an astrophysicist at the Strasbourg Astronomical Observatory in France and co-author of the study. “Any detection of X-ray polarization from 3C 84 almost decisively rules out the possibility of external Compton as the emission mechanism.”

Throughout the 60-day observation campaign, optical and radio telescopes around the world turned their attention to 3C 84 to further test between the two scenarios.

NASA’s IXPE measured a net polarization of 4% in the X-rays spectrum, with comparable values measured in the optical and radio data. These results strongly favor the synchrotron self-Compton model for the seed photons, where they come from the same jet as the higher-energy particles.

“Separating these two components was essential to this measurement and could not be done by any single X-ray telescope, but by combining the IXPE polarization data with Chandra, NuSTAR, and Swift, we were able to confirm this polarization measurement was associated specifically with 3C 84,” said Sudip Chakraborty, a researcher at the Science and Technology Institute of the Universities Space Research Association in Huntsville, Alabama, and co-author on the paper.

Scientists will continue to analyze IXPE’s data from different locations in the Perseus Cluster for different signals.

More about IXPE

NASA’s IXPE, which continues to provide unprecedented data enabling groundbreaking discoveries about celestial objects across the universe, is a joint NASA and Italian Space Agency mission with partners and science collaborators in 12 countries. The IXPE mission is led by NASA’s Marshall Space Flight Center in Huntsville, Alabama. BAE Systems, Inc., headquartered in Falls Church, Virginia, manages spacecraft operations together with the University of Colorado’s Laboratory for Atmospheric and Space Physics in Boulder.

Learn more about IXPE’s ongoing mission here:

https://www.nasa.gov/ixpe

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Lee Mohon

NASA Launches Research Program for Students to Explore Big Ideas

NASA Launches Research Program for Students to Explore Big Ideas

2 Min Read

NASA Launches Research Program for Students to Explore Big Ideas

NASA is now accepting concepts for a new research challenge. The Opportunities in Research, Business, Innovation, and Technology (ORBIT) challenge is a multi-phase innovation competition designed to empower university and college students to develop next-generation solutions that benefit life on Earth and deep-space exploration.

With up to $380,000 in total prize funding, NASA’s ORBIT challenges student teams to bring their most forward-thinking concepts to the table, either utilizing NASA intellectual property or conceptualizing their own. Teams are tasked with conducting targeted research, designing early mockups or models, and performing feasibility analyses to refine their ideas. Finalists then advance to a live showcase where they present their work to a panel of expert judges, who evaluate the proposals and select winners based on the teams’ final pitches and responses to questions.

The ORBIT has two challenge tracks for teams to choose from. The ORBIT Earth track requires teams to select a NASA-owned patent and develop novel commercial or nonprofit applications addressing real-world problems. From adapting aerospace materials for disaster response and preparedness, to repurposing space-based sensors for healthcare, students must demonstrate clear pathways to public benefit.

The ORBIT Space track asks teams to design new system concepts aligned with NASA’s current and future missions, particularly supporting the Artemis program’s goal of establishing a sustainable human presence on the Moon and preparing for eventual missions to Mars and beyond. Students will create technically feasible designs for everything from lunar habitats that could house future Artemis astronauts to deep space robotics that open more pathways to in-situ resource utilization. Teams that successfully integrate objectives from both tracks may qualify for an optional integration bonus.

This challenge accelerates innovation in areas critical to NASA’s future goals while cultivating a pipeline of interdisciplinary talent. By engaging the next generation in NASA’s dual mission to explore space and improve life on Earth, ORBIT inspires students to join the agency’s talent network while delivering tangible benefits to American communities and industries.

Beyond monetary awards, participants stand to gain mentorship from NASA experts, access to agency facilities, and hands-on experience in systems design, entrepreneurship, and commercialization.

For complete competition details, eligibility requirements, and official rules, visit:  https://go.nasa.gov/4q2TS9u

Registration is open until Feb. 9, 2026, through the NASA STEM Gateway.

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Sandra May

Through Astronaut Eyes: 25 Years of Life in Orbit  

Through Astronaut Eyes: 25 Years of Life in Orbit  

After 25 years of continuous human presence in space, the International Space Station remains a training and proving ground for deep space missions, enabling NASA to focus on Artemis missions to the Moon and Mars. The orbiting laboratory is also a living archive of human experience, culture, and connection.  

Creating community

Expedition 34 crew members pictured in the Unity node of the International Space Station in December 2012. Credit: NASA
Expedition 34 crew members pictured in the Unity node of the International Space Station in December 2012.
NASA

With 290 visitors from 26 countries and five international partners, the space station has celebrated many different cultures during its 25 years of continuous human presence. Crew members share their holiday traditions, cuisine, music, and games with each other – creating their own community, similar to the ones they have back home, while maintaining a connection to Earth. 

Crews living and working aboard the space station during the holiday season have found creative ways to mark the occasions from low Earth orbit. Festive socks, Halloween costumes, mini artificial Christmas trees, champagne, and candle-less menorahs are just a few of the items space station visitors have brought with them to spread holiday cheer.  

Mealtimes are also the perfect opportunity to share a taste of home. The space station’s standard menu is inclusive of varied cuisines, but crew members also contribute their own special food items. French astronaut Thomas G. Pesquet once brought macarons to help celebrate his birthday, and several JAXA (Japan Aerospace Exploration Agency) astronauts have hosted sushi parties.  

Sharing a piece of themselves and their cultures not only fosters crew camaraderie but also supports the international collaboration necessary to sustain the space station’s success. 

Taking music to new heights 

Five people hold musical instruments aboard the International Space Station.
Expedition 55 crew members aboard the space station (from left) are NASA astronaut Drew Feustel, Roscosmos cosmonaut Oleg Artemyev, and NASA astronauts Ricky Arnold and Scott Tingle.
JAXA (Japan Aerospace Exploration Agency)/Norishige Kanai

The first musical instrument, an acoustic guitar, arrived at the orbiting laboratory in August 2001. Since then, playing music aboard the orbiting laboratory has supported astronaut well-being, fostered relationships among international crew members, and helped them connect with home. 

The space station’s instrument collection started with an acoustic guitar and an electric keyboard, and also includes an alto saxophone. Some NASA astronauts bring their own instruments to suit their playing habits – bagpipes for Kjell Lindgren, flutes for Catherine Coleman, a piccolo for Jessica Meir. International partners have, too. In April 2010, JAXA astronauts Soichi Noguchi and Naoko Yamazaki performed a duet using a bamboo flute and a miniature version of a traditional Japanese stringed instrument.  

Several crew members have played in concerts on Earth while still orbiting the planet. Coleman played a duet with the frontman of Jethro Tull, for example, and ESA (European Space Agency) Luca Parmitano used the station’s electric keyboard to participate in a concert at Moscow’s Luzhniki Stadium. He later became the first person to perform a DJ set from space. 

The space station has even hosted at least one epic jam session, featuring the crew members of Expedition 55 on guitar, flutes, and a drum made from a repurposed waste container. 

Read more musical memories here

An astronaut’s perspective

The sun shines above the Earth's horizon
The sun shines above Earth’s horizon as the space station orbited 264 miles above the Canadian province of Quebec.
NASA

Across the decades and missions of U.S. human spaceflight, NASA astronauts have shared a unique and transcendent experience: looking down at Earth from the space station’s cupola windows. That experience has had a profound impact on many, creating a powerful shift in the way astronauts think about life and our home planet – a phenomenon known as the overview effect. 

Crew members aboard the orbital outpost describe the beauty of our planet and how it stands in stark contrast to the darkness of space from the cupola module. Many comment on Earth’s fragility and the need to protect it after observing how thin the planet’s atmosphere appears to be from orbit. Others note the lack of borders or lines we see on a map, emphasizing that all of humanity is connected.  

Regardless of how long they stay in orbit, astronauts return with a different worldview they are eager to share with others.  

Read more about astronaut perspectives on the overview effect or watch “Down to Earth” on NASA+. 

Capturing the beauty and science in orbit  

The space station provides a vantage point like no other. The cupola observation module, with its seven windows, offers unparalleled panoramic views of Earth and space which are crucial for monitoring mission activities, conducting scientific observations, and supporting crew morale and habitability. Astronauts aboard the orbiting laboratory have captured millions of photographs of Earth, creating a visual archive that spans 25 years of continuous human presence in orbit.  

These images serve as scientific data used to track hurricanes, monitor wildfires, measure glacial retreat, and study urban growth through NASA’s Crew Earth Observations. Astronaut photography also supports NASA Disaster Response, a program that works with various NASA centers to collect data before, during, and following a disaster to aid recovery efforts. 

The cupola has become a favorite spot for astronauts to work and reflect. Their photos help connect people worldwide to the orbital outpost, reinforcing the importance of protecting our planet.  

Earth views

Station memories from the ground 

Flight controllers at NASA’s Mission Control Center in Houston marked 25 years of continuous human presence in space with the Expedition 73 crew aboard the orbital outpost on Nov. 2, 2025.
NASA/Pooja J. Jesrani

Behind every moment aboard the orbiting laboratory is a dedicated team on the ground – engineers, scientists, flight directors, and communicators – who work around the clock to keep crews safe and missions running smoothly.  

They mark milestones together, from spacecraft dockings and crew returns to mission anniversaries and plaque-hanging ceremonies. Teams on console in the mission control have even organized chess matches with astronauts in orbit to foster connection between Earth and space. 

The flight control team celebrated the 25th anniversary of continuous human habitation in space with the Expedition 73 crew aboard the station on Nov. 2, 2025. The team congratulated the crew to mark the incredible milestone. They emphasized that humanity has held a heartbeat in orbit for a quarter century, a testament to human curiosity, cooperation, and courage that keeps the light of exploration shining above Earth and represents the very best of what humankind can achieve together. Every orbit, every experiment, and every challenge has taught teams how to adapt, grow, and build the skills needed for the next great leaps to the Moon, Mars, and beyond.

Holidays are often spent in the control rooms, where teams decorate consoles, share potluck meals, and hold the occasional cookie-cutting contest. Engineers in the station’s Mission Evaluation Room (MER) host an annual “MERloween,” a tradition that began in 2006 to celebrate the year’s milestones and reflect on lessons learned. 

These traditions highlight the spirit and teamwork that make every mission possible. The dedication honed through decades of mission support now guides the teamwork and expertise that will send Artemis astronauts to the Moon and beyond. 

A group of people dressed in Christmas outfits pose for a photo in front of mission control.
Flight controllers in mission control celebrate the holidays while supporting crews aboard the space station.
NASA/Josh Valcarcel

Painting hope beyond Earth 

A woman holds up a blue watercolor painting aboard the space station.
NASA astronaut Nicole Stott, the first person to watercolor in space, paints aboard the space station.
NASA

Former NASA astronaut Nicole Stott became the first person to watercolor in space during her time aboard the orbiting laboratory. Inspired by the beauty of Earth from orbit, she used her art to connect the science of human spaceflight with the creativity that defines it. 

After returning to Earth, Stott helped launch the Space for Art Foundation, which unites children around the world through the healing power of art and space. One of its most meaningful initiatives, the Spacesuit Art Project, invites young patients undergoing cancer treatment to create colorful artwork that is transformed into custom-made spacesuits. Each suit – Hope, Courage, Unity, Victory, Dreamer, Exploration, Beyond, and Infinity – celebrates the imagination and resilience of its creators. 

Four of these suits have journeyed to and from the orbiting laboratory, where astronauts wore them during special downlinks to speak with the patients and raise awareness for childhood cancer research. The project shows that space exploration is not only about discovery, but about compassion, creativity, and the human spirit that connects us all. 

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Sumer Loggins