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By NASA
NASA/Jonny Kim NASA and its partners have supported humans continuously living and working in space since November 2000. A truly global endeavor, the International Space Station has been visited by more than 280 people from 23 countries and a variety of international and commercial spacecraft. The unique microgravity laboratory has hosted more than 4,000 experiments from more than 5,000 researchers in more than 110 countries. The space station also is facilitating the growth of a commercial market in low Earth orbit for research, technology development, and crew and cargo transportation.
NASA created a dedicated logo to symbolize this historic achievement. The logo is visible in the cupola of the space station in this July 17, 2025, image. The central astronaut figure is representative of all those who have lived and worked aboard the station during the 25 years of continuous human presence. In the dark sky of space surrounding the astronaut are 15 stars, which symbolize the 15 partner nations that support the orbiting laboratory.
There is a visual representation of the space station toward the edge of the design, where humans have had a continuous presence for the past 25 years. The Earth represents the planet which the station orbits and that science conducted aboard the orbiting laboratory is for the benefit of all. Integrated into the border of the design is the number “25” to further represent the 25 years of human presence aboard the space station.
After 25 years of continuous human presence, the space station remains a training and proving ground for deep space missions, enabling NASA to focus on Artemis missions to the Moon and Mars.
For more information about the International Space Station, please visit https://www.nasa.gov/international-space-station/.
Text credit: Kara Slaughter
Image credit: NASA/Jonny Kim
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Earth Day Poster for 2025 uses imagery from the Landsat mission — a joint mission with USGS — to celebrate our home planet. NASA/USGS/Landsat From the iconic image of Earthrise taken by Apollo 8 crew, to the famous Pale Blue Dot image of Earth snapped by Voyager I spacecraft, to state-of-the-art observations of our planet by new satellites such as PACE (Plankton, Aerosol, Cloud, ocean Ecosystem), NASA has given us novel ways to see our home. This Earth Day, NASA is sharing how — by building on decades of innovation—we use the unique vantage point of space to observe and understand our dynamic planet in ways that we cannot from the ground.
NASA has been observing Earth from space for more than 60 years, with cutting-edge scientific technology that can revolutionize our understanding of our home planet and provide benefits to all humanity. NASA observations include land data that helps farmers improve crop production, research on the air we breathe, and studies of atmospheric layers high above us that protect every living thing on the planet.
“NASA Science delivers every second of every day for the benefit all, and it begins with how we observe our home planet from the unique vantage point of space,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “Our satellites, Mars rovers, astronauts and other NASA Science missions send back beautiful images of our planet, from the smallest of plankton to the pale blue dot, to help give us a comprehensive, detailed view of our home that we especially celebrate each Earth Day.”
NASA data and tools are vital to federal, state, local, and international governments to monitor and manage land, air, and water resources. From mapping the ocean floor to finding critical mineral deposits to alerting land managers when fire risk is high, NASA’s data and information informs nearly every aspect of our economy and our lives.
“Another way NASA celebrates Earth Day is by sharing information about how our science benefits the entire nation, such as by providing U.S. farmers and ranchers with ongoing measurements of water, crop health, wildfire predictions, and knowledge of what is being grown around the world,” said Karen St. Germain, director of NASA’s Earth Science Division at the agency’s headquarters in Washington. “This data informs field level farming and ranching decisions with impact felt as far as the commodity-trading floor and our grocery stores.”
Next up for NASA’s work to help mitigate natural disasters is a mission called NISAR (NASA-ISRO Synthetic Aperture Radar) which is a partnership between NASA and ISRO (India Space Research Organization). NISAR, which is targeted to launch later this year, will measure land changes from earthquakes, landslides, and volcanos, producing more NASA science data to aid in disaster response. The mission’s radar will detect movements of the planet’s surface as small as 0.4 inches over areas about the size of half a tennis court. By tracking subtle changes in Earth’s surface, it will spot warning signs of imminent volcanic eruptions, help to monitor groundwater supplies, track the melt rate of ice sheets tied to sea level rise, and observe shifts in the distribution of vegetation around the world.
From our oceans to our skies, to our ice caps, to our mountains, and to our rivers and streams, NASA’s Earth observations enhance our understanding of the world around us and celebrate the incredible planet we call home.
To download NASA’s 2025 Earth Day poster, visit:
https://nasa.gov/earthdayposters
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Last Updated Apr 21, 2025 Related Terms
Earth Day Earth General Landsat NISAR (NASA-ISRO Synthetic Aperture Radar) PACE (Plankton, Aerosol, Cloud, Ocean Ecosystem) Explore More
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By NASA
Explore This Section Earth Home Earth Observer Home Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam More Archives 5 min read
Celebrating 25 Years of Terra
Expanded coverage of topics from “The Editor’s Corner” in The Earth Observer
Terra anniversary banner Image credit: NASA Nasa personnel gather to celebrate Terra’s 25th anniversary at the Goddard Visitor Center. Image credit: NASA On December 18, 2024, Terra—the first EOS Flagship mission celebrated the 25th anniversary of its launch from Vandenberg Space Force (then Air Force) Base. Some 70 individuals gathered at the Goddard Space Flight Center’s (GSFC) Visitor Center to celebrate this remarkable achievement for the venerable mission – with 75 more participating virtually.
The gathering began with a reception culminating with some informal remarks in the main area of the Visitor’s Center outside the auditorium from Marc Dinardo [Lockheed Martin, emeritus] who was involved in the design of Terra. He explained that – at the time it was being built in the 1990s – Terra represented a “big step forward” for Lockheed Martin compared to projects the company had done prior to this. He discussed several engineering feats, e.g., fitting spacecraft components into the Atlas rocket used to launch Terra, moving from tape recorders to solid state recorders for data storage, the (at the time) novel thermal system developed to reject heat and protect instruments, and the direct broadcast capabilities.
After the initial remarks, the in-person participants moved into the auditorium where they heard from representatives from Senior management [both from NASA Headquarters and GSFC] as well as from several key figures in Terra’s long history. Each speaker gave brief remarks and shared their perspectives on Terra’s development and achievements. Short summaries of each presentation follow below.
Julie Robinson [NASA HQ—Deputy Director of the Earth Science Division] began by noting that this feels like a family celebration. She said her first personal experience with Terra was submitting a proposal as a young scientist to do research that would use data from Terra. At that time the idea of studying Earth as a system of systems was brand new. She had no idea at that time that more than a quarter-century later, she’d be involved in planning the “next generation” Earth System Observatory (ESO).
Shawn Domagal-Goldman [Deputy Director of the Sciences and Exploration Directorate] spoke about how some of the biggest science questions we try to answer are interdisciplinary and cross-instrument, spanning missions and generations, and that the expertise and diverse skillsets of those who have worked on the Terra team over the past 25 years embodies this goal.
Tom Neumann [GSFC—Deputy Director of Earth Science Division (GSFC)] reflected on his early involvement in the Terra–Aqua–Aura proposal reviews. He noted the sheer number of people involved in the mission and the logistical challenges that organizing that size group presented at the time. He also commented on the feeling of family surrounding the Team and how this surely contributed to its remarkable achievements over the past 25 years.
Guennadi Kroupnik [Canadian Space Agency—Director General of Space Utilization] extended congratulations to NASA and Terra team for 25 years of operations. He commented that this “six year” mission has endured far beyond what was planned. Canada’s contribution was the Measurement of Pollution in the Troposphere (MOPITT) instrument with Jim Drummond [University of Toronto] as Principal Investigator. Kroupnik noted that MOPITT Is longest continuously running instrument in Canadian history. He is pleased that CSA has been able to partner with NASA on Terra and looks forward to future collaboration on the Atmospheric Observing System (AOS), which is one of the missions planned as part of ESO.
Jack Kaye [NASA Headquarters—Associate Director for Research of the Earth Science Division] spoke of Terra’s remarkable scientific accomplishments, the creativity of the team, and the intentional emphasis placed on validating the data, and the creativity of the Team. He also noted that the direct broadcast capability was extremely useful and led to many applications. Kaye remarked that the late Yoram Kauffman referred to the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) as the “zoom lens of Terra.”
Miguel Román [GSFC—Deputy Director for Atmospheres] described himself as a “child of Terra,” as he began his science career at around the same time that Terra launched and has been involved in various capacities ever since. Román recalled the launch taking place near vineyards, where the team celebrated the successful launch with local wine, to finally sharing a bottle of wine with the late Piers Sellers (who served as the first Terra project scientist) at one of the final gatherings Piers threw before he passed from cancer. Román also mentioned the Our Changing Planet book that four Earth Scientists – including former EOS Senior Project Scientist and Moderate Resolution Imaging Spectroradiometer (MODIS) Science Team Leader Michael King and former Aqua Project Scientist Claire Parkinson—both GSFC emeritus – collaborated to write that was published in 2007. This book made use of numerous images and data from Terra’s five instruments – as well as other EOS data.
Kurt Thome [GSFC—Terra Project Scientist] rounded out the presentations, emphasizing again what several have stated in their individual comments – the Terra Team truly is a family. He commented that he’s only been leading the mission for the past ten years and that his work builds on the shoulders of those who came before him. In particular, he acknowledged the slide Miguel Román showed briefly during his presentation that honored those who were part of the Terra family who have passed away – e.g., Piers Sellers, Yoram Kauffman.
Steve Platnick
EOS Senior Project Scientist
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Last Updated Mar 20, 2025 Related Terms
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By NASA
ESA (European Space Agency) astronaut Samantha Cristoforetti pictured aboard the International Space Station on Dec. 20, 2014, during Expedition 42.Credit: NASA Crew members aboard the International Space Station celebrate the holiday season in a unique way while living and working at the orbiting laboratory. Each crew member, including the current Expedition 72, spends time enjoying the view of Earth from the space station, privately communicating with their friends and families, and sharing a joint meal with their expedition crewmates, while continuing experiments and station maintenance.
This view of the rising Earth greeted the Apollo 8 astronauts William Ander, Frank Borman, and James Lovell on Dec. 24, 1968, as they approached from behind the Moon after the fourth nearside lunar orbit.Credit: NASA As the first crew to spend Christmas in space and leave Earth orbit, Apollo 8 astronauts Frank Borman, James Lovell, and William Anders, celebrated while circling the Moon in December 1968. The crew commemorated Christmas Eve by reading opening verses from the Bible’s Book of Genesis as they broadcast scenes of the lunar surface below. An estimated one billion people across 64 countries tuned in to the crew’s broadcast.
Skylab 4 astronauts Gerald Carr, Edward Gibson, and William Pogue trim their homemade Christmas tree in December 1973. Credit: NASA In 1973, Skylab 4 astronauts Gerald Carr, Edward Gibson, and William Pogue celebrated Thanksgiving, Christmas, and New Year’s in space, as the first crew to spend the harvest festival and ring in the new year while in orbit. The crew built a homemade tree from leftover food containers, used colored decals as decorations, and topped it with a cardboard cutout in the shape of a comet. Carr and Pogue conducted a seven-hour spacewalk to change out film canisters and observe the passing Comet Kohoutek on Dec. 15, 1973. Once back inside the space station, the crew enjoyed a holiday dinner complete with fruitcake, communicated with their families, and opened presents.
NASA astronaut Jeffrey Hoffman pictured with a dreidel during Hanukkah in December 1993.Credit: NASA After NASA launched the agency’s Hubble Space Telescope into Earth’s orbit in 1990, NASA sent a space shuttle crew on a mission, STS-61, to service the telescope. In 1993, NASA astronaut Jeffrey Hoffman celebrated Hanukkah after completing the third spacewalk of the servicing mission. Hoffman celebrated with a traveling menorah and dreidel.
STS103-340-036 (19-27 December 1999) — Wearing Santa hats, astronauts John M. Grunsfeld and Steven L. Smith blend with the season for a brief celebration on the mid deck of the Space Shuttle Discovery. The interruption was very brief as the two mission specialists shortly went about completing their suit-up process in order to participate in STS-103 space walk activity, performing needed work on the Hubble Space Telescope (HST).Credit: NASA As NASA continued to support another Hubble Space Telescope servicing mission, the STS-103 crew celebrated the first space shuttle Christmas aboard Discovery in 1999. NASA astronauts Curtis Brown, Scott Kelly, Steven Smith, John Grunsfeld, and Michael Foale, along with ESA (European Space Agency) astronauts Jean-François Clervoy and Claude Nicollier enjoyed duck foie gras on Mexican tortillas, cassoulet, and salted pork with lentils. Smith and Grunsfeld completed repairs on the telescope during a spacewalk on Dec. 24, 1999, and at least one American astronaut has celebrated Christmas in space every year since.
Expedition 1 crew members Yuri Gidzenko of Roscosmos, left, NASA astronaut William Shepherd, and Sergei Krikalev of Roscosmos reading a Christmas message in December 2000.
Credit: NASA In November 2000, the arrival of Expedition 1 crew members, NASA astronaut William Shepherd and Roscosmos cosmonauts Yuri Gidzenko and Sergei Krikalev, aboard the International Space Station, marked the beginning of a continuous presence in space. As the first crew to celebrate the holiday season at the laboratorial outpost, they began the tradition of reading a goodwill message to those back on Earth. Shepherd honored a naval tradition of writing a poem as the first entry of the new year in the ship’s log.
For more than 24 years, NASA has supported a continuous U.S. human presence aboard the International Space Station, through which astronauts have learned to live and work in space for extended periods of time. As NASA supports missions to and from the station, crew members have continued to celebrate the holidays in space.
Expedition 4 crew members, NASA astronauts Daniel Bursch and Carl Walz, along with Roscosmos cosmonaut Yuri Onufriyenko, pose for a Christmas photo in December 2001. Credit: NASA Expedition 8 crew members, NASA astronaut Michael Foale, left, and Roscosmos cosmonaut Aleksandr Kaleri, right, celebrate Christmas in December 2003. Credit: NASA Expedition 10 crew members, Roscosmos cosmonaut Salizhan Sharipov, left, and NASA astronaut Leroy Chiao, right, celebrate New Year’s Eve in December 2004.Credit: NASA Expedition 12 crew members, Roscosmos cosmonaut Tokarev, left, and NASA astronaut William McArthur, pose with Christmas stockings in December 2005. NASA Expedition 14 crew members, Roscosmos cosmonaut Mikhail Tyurin, left, and NASA astronauts Michael Lopez-Alegria and Suni Williams pose wearing Santa hats in December 2006.Credit: NASA Expedition 16 crew members, Roscosmos cosmonaut Yuri Malenchenko, left, and NASA astronauts Peggy Whitson and Daniel Tani, with Christmas stockings and presents in December 2007. Expedition 18 crew members enjoy Christmas dinner in December 2008. Expedition 22 crew members gather around the dinner table in December 2009.Credit: NASA Expedition 26 crew members celebrates New Year’s Eve in December 2010.Credit: NASA Expedition 30 crew members pictured in December 2011.Credit: NASA Expedition 34 crew members pictured in December 2012. Credit: NASA Expedition 42 crew members leave milk and cookies for Santa and hang stockings using the airlock as a makeshift chimney in December 2013.Credit: NASA Expedition 50 crew members celebrate New Year’s Eve in December. Credit: NASA Expedition 54 crew member NASA astronaut Mark Vande Hei pictured as an elf for Christmas in December 2017.Credit: NASA Expedition 58 crew members inspect stockings for presents in December 2018 Expedition 61 crew member NASA astronaut Jessica Meir pictured with Hanukkah-themed socks in the cupola in December 2019. Expedition 61 crew members NASA astronauts Andrew Morgan, Christina Koch, and Jessica Meir, along with ESA (European Space Agency) astronaut Luca Parmitano share a holiday message on Dec. 23, 2019, from the International Space Station.Credit: NASA NASA astronaut Kayla Barron pictured with presents she wrapped for her crewmates in December 2021.Credit: NASA Expedition 68 crew members wear holiday outfits in December 2022.Credit: NASA Expedition 70 flight engineer NASA astronaut Jasmin Moghbeli’s husband and daughters made a felt menorah for her to celebrate Hanukkah during her mission. Since astronauts can’t light real candles aboard the space station, Moghbeli pinned felt “lights” for each night of the eight-day holiday. A dreidel spun in weightlessness will continue spinning until it comes in contact with another object but can’t land on any of its four faces. Expedition 70 crew members recorded a holiday message for those back on Earth.
Expedition 70 NASA astronaut Jasmin Moghbeli’s felt menorah and dreidel that she used to celebrate Hanukkah in December 2023. Credit: NASA NASA astronauts Don Pettit and Suni Williams, Expedition 72 flight engineer and commander respectively, pose for a fun holiday season portrait while speaking on a ham radio inside the International Space Station’s Columbus laboratory module. Credit: NASA To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Expedition 72 video holiday message from the International Space Station. Credit: NASA The International Space Station is a convergence of science, technology, and human innovation that enables research not possible on Earth. The orbiting laboratory is a springboard for developing a low Earth economy and NASA’s next great leaps in exploration, including missions to the Moon under the Artemis campaign and, ultimately, human exploration of Mars.
Go here for more holiday memories onboard the space station. To learn more about the International Space Station, its research, and its crew, at:
https://www.nasa.gov/station
News Media Contacts:
Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov
Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov
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