For the first time, researchers have been able to confirm that our planet’s boreal forests are on the move.
NASA’s Goddard Space Flight Center/Chris Burns
The boreal forest—the world’s largest terrestrial biome—is warming faster than any other forest type. To understand the changing dynamics of boreal forests, Feng et al., 2026 analyzed the biome from 1985 to 2020, leveraging the longest and highest-resolution satellite record of calibrated tree cover to date. The study, published in February in Biogeosciences with four co-authors from NASA Goddard Space Flight Center, confirms a northward shift in boreal forest cover over the past four decades. Landsat imagery played a central role in this study: the researchers applied machine learning to process 224,026 scenes collected by Landsats 4, 5, 7, and 8 to create annual, 30-meter resolution maps of tree cover across the entire boreal biome. They downscaled and extended calibrated MODIS Vegetation Continuous Fields data to 30-meter resolution, creating a 36-year time series (1984-2020) that provided unprecedented spatial detail for tracking forest changes.
The analysis revealed that boreal forests both grew in size and moved northward. The forests expanded by 0.844 million km² (a 12% increase) and shifted northward by 0.29° mean latitude, with gains concentrated between 64-68°N. Their work also showcased the capacity of new growth to act as a carbon sink. Young boreal forests (up to 36 years) hold an estimated 1.1-5.9 petagrams of carbon (Pg C) with potential to sequester an additional 2.3-3.8 Pg C if allowed to mature. Landsat’s long time series of highly calibrated data allows researchers to study how ecosystems shift over decades, a crucial insight into our changing world.
A potent winter storm in late January 2026 left much of North Carolina dealing with significant snow accumulations. Though the state is no stranger to snow, such widespread coverage is unusual.
This image, acquired on February 2 with the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Terra satellite, reveals a nearly continuous blanket of white stretching from mountain cities in the west to beachfront towns in the east. According to the North Carolina State Climate Office, measurable snow fell in all 100 counties for the first time in more than a decade.
Snowfall in North Carolina typically requires cold air funneled in from the north to combine with moisture supplied by a low-pressure system. During the January 31 weekend event, Arctic air from earlier in the week lingered across the state as a storm approached along a near-shore track, setting the stage for widespread snow.
Snow totals exceeded a foot in some of the state’s western, mountainous regions, following several years without significant snowfall events, though some locations such as Asheville saw smaller amounts. The storm even pushed south into Greenville, South Carolina, in the foothills of the Blue Ridge Mountains, where the downtown area saw about 5 inches (13 centimeters) by the evening of January 31, according to the National Weather Service.
In the Piedmont region, the hilly central part of the state, Charlotte received nearly a foot of snow—the most since 2004—while Raleigh saw a lighter accumulation of 2.8 inches, according to the state climate center.
February 2, 2026
Even coastal parts of the state traded brown sandy beaches for a blanket of white, with more than a foot reported in parts of Carteret County. Beaufort, a mainland town in the southern Outer Banks area, experienced heavy blowing snow. Slightly inland, Greenville received 14 inches, an amount not seen since a large storm in March 1980.
Though appearing serene from space, the storm posed real hazards on the ground. Dangerous road conditions snarled traffic and caused collisions, according to local news reports, while coastal areas saw high winds and waves. Overwash on Highway 12 in the Outer Banks coated parts of the road in standing water and sand, while several homes along the shore of Hatteras Island collapsed into the sea.
NASA Earth Observatory images by Michala Garrison, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. Story by Kathryn Hansen.
Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to foresee environmental events and mitigate disasters.
“NASA uses the unique vantage point of space to study our home planet to deliver life-saving data into the hands of disaster response and decision-makers every day for the benefit of all, while also informing future exploration across our solar system,” said Nicky Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington. “By understanding Earth’s surface topography, ecosystems and atmosphere, while also enabling longer range weather forecasting, these missions will help us better study the extreme environments beyond our home planet to ensure the safety of astronauts and spacecraft as we return to the Moon with the Artemis campaign and journey onward to Mars and beyond.”
These two missions were selected for continued development as part of NASA’s Earth System Explorers Program, which conducts principal investigator-led Earth science missions based on key priorities laid out by the science community and national needs. The program is designed to enable high-quality Earth system science investigations to focus on previously identified key targeted observables.
The EDGE (Earth Dynamics Geodetic Explorer) mission will observe the three-dimensional structure of terrestrial ecosystems and the surface topography of glaciers, ice sheets, and sea ice. The mission will provide an advancement beyond the measurements currently recorded from space by NASA’s ICESat-2 (Ice, Cloud, and land Elevation Satellite 2) and GEDI (Global Ecosystem Dynamics Investigation). The data collected by EDGE will measure conditions affecting land and sea transportation corridors, terrain, and other areas of commercial interest. The mission is led by Helen Amanda Fricker at the University of California San Diego.
The selected missions will advance to the next phase of development. Each mission will be subject to confirmation review in 2027, which will assess the progress of the missions and the availability of funds. If confirmed, the total estimated cost of each mission, not including launch, will not exceed $355 million with a mission launch date of no earlier than 2030.
For more information about the Earth System Explorers Program, visit:
A welder uses tools that join two or more parts through forces such as heat or pressure. Metals are the materials most commonly used in welding, but it’s also possible to weld thermoplastics or wood. Welders use their hands, skills, and problem-solving abilities to create something new.
At NASA, welders use different types of welding processes to assemble spacecraft and rocket components. Welders also put their expertise to work on equipment and facilities that make space exploration possible, such as launch pads, fuel tanks, propellant lines, and buildings where rockets are assembled.
What are the different types of welding?
Welding can be done in many different ways. Here are some of the types of welding used at NASA:
Arc Welding: Uses electricity to melt metals and fuse them together. There are many types of arc welding, including TIG and MIG welding, described below.
Tungsten Inert Gas (TIG) Welding: Uses a protective gas like argon or helium to keep the metal from reacting with air. TIG welding doesn’t leave behind splatter or residue, giving a clean, precise weld.
Metal Inert Gas (MIG) Welding: While not as clean and precise as TIG welding, is used for fast, strong welds on thicker materials, like sheet metal.
Laser Welding: Enables welders to create tiny, perfect joints for delicate components.
Ultrasonic Welding: Uses sound and friction to create a solid-state bond between layers of metal.
A technician at Michoud Assembly Facility in New Orleans welds part of the Orion spacecraft that will carry astronauts to the Moon on the Artemis II mission.
NASA
How can I become a welder?
After graduating from high school, there are a couple of pathways to choose from. You can pursue an associate’s degree in welding, typically a two-year program available through community colleges and technical schools. Another option is to obtain a certificate from a vocational school or trade school. An apprenticeship during or after this training is often the next step toward a career as a professional welder.
A NASA welder working on the RS-25 engine.
NASA
How can I start preparing today to become a welder?
Taking a welding class at your high school or local college is a great way to find out whether it’s a skill you enjoy. Research welding degrees and programs at colleges and schools to determine which one(s) fit your needs and interest. It’s also a good idea to research job vacancies to learn what employers are looking for. Finally, seek out opportunities for hands-on experience to help you practice and improve your welding skills.
Michelle Bahnsen uses TIG welding techniques to join two metal sheets.
NASA
Once I tried it, I really, really enjoyed it. There’s just something about creating something with your hands. It gives you a sense of accomplishment.
Michelle Bahnsen
Research laboratory mechanic/welder at NASA’s Armstrong Test Facility, part of the agency’s Glenn Research Center
A research laboratory mechanic and welder joins two metal sheets.
NASA
Advice from other NASA welders
“Building your knowledge in math and science is always a helpful tool, as you’ll need to understand measurements, geometry, and materials.” – Spencer Wells, engineering technician, Kennedy Space Center
“One of the best ways to set yourself up as a welder is by attending a vocational school for welding, and then working in an apprentice/internship to gain work experience and training.” – Enricque Lee, tool and die apprentice, NASA’s Glenn Research Center
On Jan. 13, 2016, technicians at Michoud Assembly Facility in New Orleans finished welding together the primary structure of the Orion spacecraft destined for deep space on Artemis I, marking another important step on the journey to Mars.
Pictured from left: Roscosmos cosmonaut Andrey Fedyaev, NASA astronauts Jack Hathaway and Jessica Meir, and ESA (European Space Agency) astronaut Sophie Adenot. Credit: NASA
NASA’s SpaceX Crew-12 mission is preparing to launch for a long-duration science mission aboard the International Space Station. During the mission, select crew members will participate in human health studies focused on understanding how astronauts’ bodies adapt to the low-gravity environment of space, including a new study examining subtle changes in blood flow.
The experiments, led by NASA’s Human Research Program, include astronauts performing ultrasounds of their blood vessels to study altered circulation and completing simulated lunar landings to assess disorientation during gravitational transitions, among other tasks. The results will help NASA plan for extended stays in space and future exploration missions.
The new study, called Venous Flow, will examine whether time aboard the space station increases the chance of crew members developing blood clots. In weightlessness, blood and other bodily fluids can move toward the head, potentially altering circulation. Any resulting blood clots could pose serious health risks, including strokes.
“Our goal is to use this information to better understand how fluid shifts affect clotting risk, so that when astronauts go on long-duration missions to the Moon and Mars, we can build the best strategies to keep them safe,” said Dr. Jason Lytle, a physiologist at NASA’s Johnson Space Center in Houston who is leading the study.
To learn more, crew members in this study will undergo preflight and postflight MRIs, ultrasound scans, blood draws, and blood pressure checks. During the flight, crew members also will capture their own jugular vein ultrasounds, take blood pressure readings, and draw blood samples for scientists to analyze after their return to Earth.
In another study, called Manual Piloting, select crew members will perform multiple simulated Moon landings before, during, and after the mission. Designed to assess their piloting and decision-making skills, participants attempt to fly a virtual spacecraft toward the lunar South Pole region — the same area future Artemis crews plan to explore.
“Astronauts may experience disorientation during gravitational transitions, which can make tasks like landing a spacecraft challenging,” said Dr. Scott Wood, a neuroscientist at NASA Johnson who is coordinating the investigation.
While spacecraft landings on the Moon and Mars are expected to be automated, crews must be prepared to take over and pilot the vehicle if necessary.
“This study will help us examine astronauts’ ability to operate a spacecraft after adapting from one gravity environment to another, and whether training near the end of their spaceflight can help prepare crews for landing,” said Wood. “We’ll monitor their ability to manually override, redirect, and control a vehicle, which will guide our strategy for training Artemis crews for future Moon missions.”
The risk of astronauts experiencing disorientation from gravitational transitions increases the longer they’re in space. For this study, which debuted during the agency’s SpaceX Crew-11 mission, researchers plan to recruit seven astronauts for short-term private missions lasting up to 30 days and 14 astronauts for long-duration missions lasting at least 106 days. A control group performing the same tasks as the astronauts will provide a basis of comparison.
After returning to Earth, select crew members will participate in a study that documents any injuries, such as scrapes or bruises that may occur during landing. Transitioning from weightlessness to Earth’s gravity can increase the injury risk without proper safeguards. The data will help researchers improve spacecraft design to better protect crews from landing forces.
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NASA’s Human Research Program
NASA’s Human Research Program pursues methods and technologies to support safe, productive human space travel. Through science conducted in laboratories, ground-based analogs, commercial missions, the International Space Station and Artemis missions, the program scrutinizes how spaceflight affects human bodies and behaviors. Such research drives the program’s quest to innovate ways that keep astronauts healthy and mission ready as human space exploration expands to the Moon, Mars, and beyond.
Curiosity Blog, Sols 4788-4797: Welcome Back from Conjunction
NASA’s Mars rover Curiosity acquired this image using its Mast Camera (Mastcam); it shows the “Nevado Sajama” drill site from November, right next to the location of this weekend’s drill. The new drill site will be to the upper left of the existing hole. Curiosity captured the image on Jan. 25, 2026 — Sol 4789, or Martian day 4,789 of the Mars Science Laboratory mission — at 19:20:37 UTC.
NASA/JPL-Caltech/MSSS
Written by Alex Innanen, Atmospheric Scientist at York University, Toronto
Earth planning date: Friday, Jan. 30, 2026
Mars has emerged from its holiday behind the Sun, and we here on Earth have been able to reconnect with Curiosity and get back to work on Mars. Our first planning day last Friday gave Curiosity a full weekend of activities, which wrapped up with getting us ready for our next drill. We checked out a broken white rock in the workspace with APXS, MAHLI, and ChemCam’s laser spectrometer and finished up imaging a sandy area we’ve kept an eye on during conjunction to see if we could catch any wind motion, before taking a small drive to our drill location about 2 meters away (about 6 feet).
This location may look familiar — our next drill will be only a few centimeters away from “Nevado Sajama,” which we drilled back in November. The reason we’ve returned here is to do a rare SAM experiment the instrument’s last container of tetramethylammonium hydroxide (or TMAH, for less of a mouthful). TMAH is a chemical that we can mix with our sample from Nevado Sajama to help identify any organic molecules. SAM had only two containers of TMAH (the first of which we used almost six years ago, so we want to be very certain that everything will go well with this experiment. As a result, we did a rehearsal of the handoff of the sample to SAM in Wednesday’s plan, before we drill this weekend.
