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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Lucy spacecraft has its next flyby target, the small main belt asteroid Donaldjohanson, in its sights. By blinking between images captured by Lucy on Feb. 20 and 22, this animation shows the perceived motion of Donaldjohanson relative to the background stars as the spacecraft rapidly approaches the asteroid.
NASA’s Lucy spacecraft’s first views of the asteroid Donaldjohanson. The asteroid is circled on the left to guide the eye.NASA/Goddard/SwRI/Johns Hopkins APL Lucy will pass within 596 miles (960 km) of the 2-mile-wide asteroid on April 20. This second asteroid encounter for the Lucy spacecraft will serve as a dress-rehearsal for the spacecraft’s main targets, the never-before-explored Jupiter Trojan asteroids. Lucy already successfully observed the tiny main belt asteroid Dinkinesh and its contact-binary moon, Selam, in November 2023. Lucy will continue to image Donaldjohanson over the next two months as part of its optical navigation program, which uses the asteroid’s apparent position against the star background to ensure an accurate flyby.
Donaldjohanson will remain an unresolved point of light during the spacecraft’s long approach and won’t start to show surface detail until the day of the encounter.
From a distance of 45 million miles (70 million km), Donaldjohanson is still dim, though it stands out clearly in this field of relatively faint stars in the constellation of Sextans. Celestial north is to the right of the frame, and the 0.11-degree field of view would correspond to 85,500 miles (140,000 km) at the distance of the asteroid. In the first of the two images, another dim asteroid can be seen photobombing in the lower right quadrant of the image. However, just as the headlights of an approaching car often appear relatively stationary, Donaldjohanson’s apparent motion between these two images is much smaller than that of this interloper, which has moved out of the field of view in the second image.
These observations were made by Lucy’s high-resolution camera, the L’LORRI instrument — short for Lucy LOng Range Reconnaissance Imager — provided by the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland.
Asteroid Donaldjohanson is named for anthropologist Donald Johanson, who discovered the fossilized skeleton — called “Lucy” — of a human ancestor. NASA’s Lucy mission is named for the fossil.
Lucy’s principal investigator, Hal Levison, is based out of the Boulder, Colorado, branch of Southwest Research Institute, headquartered in San Antonio. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, provides overall mission management, systems engineering, and safety and mission assurance. Lockheed Martin Space in Littleton, Colorado, built the spacecraft. Lucy is the 13th mission in NASA’s Discovery Program. NASA’s Marshall Space Flight Center in Huntsville, Alabama, manages the Discovery Program for the Science Mission Directorate at NASA Headquarters in Washington.
For more information about NASA’s Lucy mission, visit: https://www.nasa.gov/lucy
By Katherine Kretke
Southwest Research Institute
Media Contact:
Nancy N. Jones
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Feb 25, 2025 Related Terms
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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 8 min read
AGU 2024: NASA Science on Display in the Nation’s Capital
Introduction
The American Geophysical Union (AGU) returned to the nation’s capital in 2024, hosting its annual meeting at the Walter E. Washington Convention Center in Washington, DC from December 9–14, 2024. NASA Science upheld its long-standing tradition as an AGU partner and exhibitor, leveraging the meeting as an opportunity to share NASA’s cutting-edge research, data, and technology with the largest collection of Earth and planetary science professionals in the world. Many of the estimated 25,000 students, scientists, and industry personnel who attended the conference visited the NASA Science exhibit, interacting with NASA subject matter experts as detailed in the essay that follows – see Photo 1. Visitors also watched live Hyperwall presentations and collected NASA Science outreach materials, such as the 2025 NASA Science Planning Guide.
Photo 1. Paulo Younse [NASA/Jet Propulsion Laboratory (JPL), Robotics Systems Group—Engineer,] poses with a model of the sample tube he designed for the caching architecture that was used on NASA’s Mars Sample Return mission. Photo credit: NASA Highlights from the NASA Science Exhibit
NASA Hyperwall Stories
The NASA Hyperwall has been a focal point of the agency’s outreach efforts for over two decades, serving as both a powerful storytelling platform and the primary vehicle through which the public engages with the award-winning visualizations published by NASA’s Scientific Visualization Studio (SVS) – see Photo 2. Forty-nine NASA mission scientists and program representatives shared NASA science with the public from the Hyperwall stage during AGU24. NASA leadership shared mission news and outlined upcoming research across all five of the NASA Science divisions: Earth science, planetary science, heliophysics, astrophysics, and biological and physical sciences – see Photos 3–8. A catalog of NASA project scientists and mission representatives, who provided colorful overviews of everything from NASA’s Mars Sample Return to the Parker Solar Probe’s historic flyby of the Sun, delivered additional presentations.
Photo 2. Mark Subbarao [NASA GSFC—Director of NASA’s Scientific Visualization Studio] highlighted key visualizations produced by NASA’s Scientific Visualization Studio during 2024 and presented them as a countdown of the top 10 visualizations of the year. Photo credit: NASA The complete AGU24 Hyperwall schedule is available at this link. Readers can view YouTube videos of the presentations via links over the individual names in the photo captions below.
Photo 3. Nicola Fox [NASA HQ—Associate Administrator of Science Mission Directorate] kicked off the week’s Hyperwall storytelling series by sharing 12 images selected for the 2025 NASA Science Planning Guide. Each image underscores the beauty of the natural world and the inherent value of scientific endeavors undertaken not only at NASA but by citizens around the globe. Photo credit: NASA Photo 4. Karen St. Germain [NASA HQ—Director of the Earth Science Division] provided audience members with an overview of NASA’s Earth Science Division – including the latest science from the Plankton, Aerosol, Cloud, and Ecosystems (PACE) mission. Photo credit: NASA Photo 5. Jack Kaye [NASA HQ—Director of the Airborne Science Program] highlighted key airborne science missions that flew in 2024 and demonstrated the broad list of airborne satellites and instruments and how their applications enable the advancement of Earth science research around the globe. Photo credit: NASA Photo 6. Joseph Westlake [NASA HQ—Director of the Heliophysics Division] delivered a talk in front of the NASA Hyperwall that captured the groundbreaking research that NASA has planned for the culmination of the Heliophysics Big Year, including mission news related to the Parker Solar Probe, Interstellar Mapping and Acceleration Probe (IMAP), and Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS). Photo credit: NASA Photo 7. Mark Clampin [NASA HQ—Director of the Astrophysics Division] gave AGU attendees a glimpse of NASA missions that will help researchers around the globe observe distant worlds and answer profound questions about the physics of the universe beyond our solar system. His presentation centered around the impact of the upcoming Nancy Grace Roman Telescope and Habitable Worlds Observatory (HWO). Photo credit: NASA Photo 8. Lisa Carnell [NASA HQ—Director of the Biological Sciences Division], who sits at the helm of NASA’s newest scientific division, gave an overview of the current and future NASA research that is enhancing our understanding of how humans can live and work in space. Photo credit: NASA During AGU, NASA also celebrated the winners of the 2024 AGU Michael Freilich Student Visualization Competition, an annual competition honoring former NASA Earth Science Division director Michael Freilich that inspires students to develop creative strategies for effectively communicating complex scientific problems – see Photo 9. See the summary of “Symposium on Earth Science and Applications from Space…” [The Earth Observer, Mar–Apr 2020, Volume 32 Issue 3, 4–18] to learn more about Freilich’s career at NASA and impact on Earth science. A list of the award’s past recipients, dating back to the 2016, is published on AGU’s website.
Photo 9a. In partnership with AGU, student winners of the 2024 AGU Michael Freilich Student Visualization Competition received prizes and presented their work at the NASA hyperwall stage. Steve Platnick [NASA GSFC—Research Scientist for Earth Science Division ] [left with back to camera] congratulates Caitlin Haedrich [NC State University—Ph.D. candidate, contest winner (CW)]. Photo credit: NASA Photo 9b. Standing on the NASA Hyperwall stage [left to right] are Erik Hankin [AGU—Assistant Director of Career and Student Programs], Barry Lefer [NASA HQ—Program Manager for the Tropospheric Composition Program (TCP)], Mya Thomas [University of Missouri-Kansas City—Undergraduate Student. CW], Mariliee Karinshak [Washington University in St. Louis—Undergraduate Student, CW], Swati Singh [Auburn University—PhD Candidate, CW], Crisel Suarez [Vanderbilt University—PhD Candidate, CW], and Steve Graham [GSFC/Global Science & Technology Inc.—NASA Science Support Office Task Leader]. Photo credit: NASA Photo 9c. Patrick Kerwin [University of Arizona—Graduate Student, CW] delivers his award-winning talk titled Earth Observation for Disaster Response: Highlighting Applied Products. Photo credit: NASA
Face-to-face With NASA Experts
AGU opened its exhibit hall to the public at 10:00 AM on December 9. Thousands of eager attendees poured into the space to engage with exhibit staff, representing a variety of universities, research institutions, and private organizations from around the world.
Photo 10. AGU attendees explore the NASA Science exhibit space shortly after the exhibit hall opened on December 9. Photo credit: NASA Photo 11a. AGU meeting participants anticipate the distribution of the NASA Science Planning Guide each year, which features artwork from Science Mission Directorate (SMD) art director Jenny Mottar and a collection of science images curated by SMD leadership. Photo credit: NASA Photo 11b. AGU meeting participants anticipate the distribution of the NASA Science Planning Guide each year, which features artwork from Science Mission Directorate (SMD) art director Jenny Mottar and a collection of science images curated by SMD leadership. Photo credit: NASA
NASA Science welcomed AGU attendees, who gathered within the perimeter of the exhibit shortly after opening – see Photo 10 – where NASA staff distributed the 2025 NASA Science Planning Guide – see Photo 11.
Attendees filtered through the NASA Science booth by the thousands, where more than 130 outreach specialists and subject matter experts from across the agency were available to share mission-specific science and interface directly with members of the public – see Photos 12–15.
Photo 12. The NASA Science booth included a collection of exhibit tables, where mission scientists and outreach specialists shared information and materials specific to various NASA missions and programs. Photo credit: NASA Photo 13. Outreach specialists from NASA’s Dragonfly mission, which plans to send a robotic aircraft to the surface of Saturn’s moon Titan, speak with attendees in front of a to-scale model of the aircraft. Photo credit: NASA Photo 14. Staff from NASA’s astrobiology program share a collection of graphic novels produced by graphic artist Aaron Gronstal, highlighting the research that the program conducts to answer important questions about the origin, evolution, and distribution of life in the universe. Photo credit: NASA Photo 15. Exhibit staff and AGU attendees interact with three-dimensional (3D) models of NASA spacecraft and technology in augmented reality. Photo credit: NASA AGU attendees met with project scientists and experts at a new exhibit, called “Ask Me Anything.” The discussions spanned a variety of NASA missions, including Mars Sample Return, James Webb Space Telescope, and Parker Solar Probe, with specialists from these and other missions who spoke during the sessions – see Photo 16. An installation of NASA’s Earth Information Center also made an appearance at AGU24, providing attendees with additional opportunities to speak with Earth scientists and learn more about NASA research – see Photo 17.
Photo 16. NASA Heliophysicists discuss solar science with AGU attendees at the “Ask Me About Heliophysics” table. Photo credit: NASA Photo 17. At the Earth Information Center, attendees spoke with NASA staff about the various ways that NASA keeps tabs on the health of Earth’s atmosphere, oceans, and landmasses from space. Photo credit: NASA 2024 SMD Strategic Content and Integration Meeting
As they have done for many years now, staff and leadership from NASA’s Science Mission Directorate (SMD) Engagement Branch convened in Washington, DC on December 8 (the day before the Fall AGU meeting began) to discuss agency communications and outreach priorities. This annual meeting provided personnel from each of SMD’s scientific divisions a valuable opportunity to highlight productive strategies and initiatives from the previous calendar year and chart a path for the year ahead. During the single-day event, team leaders shared information related to NASA’s web-modernization efforts, digital outreach strategies, and exhibit presence. Approximately 150 in-person and 50 online NASA staff joined the hybrid meeting.
After a welcome from Steve Graham [GSFC/GST—NASA Science Support Office Task Leader], who covered meeting logistics, the participants heard from NASA Headquarters’ SMD Engagement and Communication representatives throughout the day.
Amy Kaminski [Engagement Branch Chief], who recently replaced Kristen Erickson in this role, used this opportunity to more formally introduce herself to those who might not know her and share her visions for engagement. Karen Fox [Senior Science Communications Official] discussed the evolution of communication for SMD missions over the past decade – moving from siloed communications a decade ago that very much focused on “my mission,” to a much more cooperation between missions and focus on thematic communications. Following up on Kaminski’s remarks that gave an overall vision for engagement, and Fox’s remarks about how having a vision will help streamline our messaging, Alex Lockwood [Strategic Messaging and Engagement Lead] delved into the nuts and bolts of strategic planning, with focus on the use of work packages and memorandums of understanding for promoting upcoming missions.
After the leadership set the tone for the meeting, Emily Furfaro [NASA Science Digital Manager] gave a rapid tour of many of NASA’s digital assets intended to give participants an idea of the vast resources available for use. Diana Logreira [NASA Science Public Web Manager] then laid out some principles to be followed in developing unified vision for the NASA Science public web experience.
In the afternoon, there were individual breakout sessions for the Earth Science, Planetary Science, and Heliophysics divisions. These sub-meetings were led by Ellen Gray, Erin Mahoney, and Deb Hernandez, Engagement Leads for Earth Science, Heliophysics, and Planetary Sciences respectively. These breakout sessions afforded participants with an opportunity to focus on ideas and goals specific to their own divisions for 2025. In the Earth Science breakout session, participants heard from other several other speakers who discussed the beats, or content focus areas, that had been chosen for Earth Science Communications in 2024 – including oceans and Earth Action (formerly known as Applied Sciences) – and those that have been identified for 2025: technology, land science, and continued focus on Earth Action.
Photo 18a. NASA Science Mission Directorate staff gathers in Washington, DC ahead of AGU for the annual meeting, where in-person attendees hear from leadership and work collaboratively to refine communications strategies for 2025. Photo credit: NASA Photo 18b. Joseph Westlake [NASA HQ—Heliophysics Division Director] discusses division-specific goals with Heliophysics communication leads during the division’s “breakout session.” Photo credit: NASA Photo 18c. Science Mission Directorate leadership fields questions from SMD staff during the end-of-meeting panel discussion. Photo credit: NASA
After participants reconvened from the breakouts, Nicola Fox [Associate Administrator, Science Mission Directorate] gave a mid-afternoon presentation in which she presented her perspective on integrated NASA science, which led into a one-hour “Ask Us” panel with Division Directors to conclude the meeting. Participants included: Mark Clampin [Astrophysics], Lisa Carnell [Biological], Julie Robinson [Earth Science, Deputy], Joe Westlake [Heliophysics], John Gagosian [Joint Agency Satellite], Charles Webb [Planetary Science, Acting].
Based on this meeting, and other communications guidance from NASA HQ, a few general SMD/Earth Science content and engagement priorities for 2025 have emerged. They include:
continuing to develop stories and products related to the three primary beats for 2025: technology, land, and Earth action; emphasizing the value of SMD science as a whole or system of connected divisions, promoting cross-divisional science; increasing the use of social media as a vehicle to share NASA missions and programs with diverse audiences; focusing on critical – and high-profile – ongoing missions [e.g., Parker Solar Probe, Europa Clipper, Plankton Aerosols, Cloud and ocean Ecosystem (PACE)] and upcoming launches [ARTEMIS and NASA–Indian Space Research Organisation (ISRO) Synthetic Aperture Radar (NISAR)]; fostering collaborations and partnerships with agencies and institutions, e.g. instillation of the Earth Information Center at the Smithsonian Museum of Natural History; and improving the visitor and guest experience at NASA centers, including Kennedy Space Center launches. Conclusion
The NASA exhibit is an important component of the agency’s presence at AGU, and NASA leverages its large cohort of scientists who participate in the exchange of information and ideas outside of the exhibit hall – in plenary meetings, workshops, poster sessions, panels, and informal discussions. AGU sessions and events that featured NASA resources, scientists, and program directors included the Living with a Star Town Hall, NASA’s Early Career Research Program, NASA’s Sea Level Change Team: Turning Research into Action, and many more. Click here for the complete list of NASA-related events at AGU24.
As the final event in a busy calendar of annual scientific conferences, AGU is often an opportunity for NASA scientists to publish findings from the previous year and set goals for the year ahead. Just as they did in 2024, the agency’s robust portfolio of missions and programs will continue to set new records, such as NASA’s Parker Solar Probe pass of the Sun, and conduct fundamental research in the fields of Earth and space science.
The 2025 AGU annual meeting will be held at the New Orleans Ernest N. Morial Convention Center, in New Orleans, LA, from December 15–19, 2025. See you there.
Nathan Marder
NASA’s Goddard Space Flight Center/Global Science & Technology Inc.
nathan.marder@nasa.gov
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Last Updated Feb 25, 2025 Related Terms
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By NASA
NASA’s X-59 lights up the night sky with its unique Mach diamonds, also known as shock diamonds, during maximum afterburner testing at Lockheed Martin Skunk Works in Palmdale, California. The test demonstrates the engine’s ability to generate the thrust required for supersonic flight, advancing NASA’s Quesst mission.Lockheed Martin Corporation/Gary Tice NASA’s X-59 quiet supersonic research aircraft took another successful step toward flight with the conclusion of a series of engine performance tests. During maximum afterburner testing, a test demonstrating the engine’s ability to generate the thrust required for supersonic flight, the aircraft showed off a phenomenon known as Mach diamonds, seen in this image from Jan. 22, 2025. Mach diamonds, or shock diamonds, appear in the exhaust of supersonic aircraft like the X-59.
The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to commercial supersonic flight over land by making sonic booms quieter.
See what’s next for X-59.
Image credit: Lockheed Martin/Gary Tice
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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This artist’s concept depicts NASA’s Europa Clipper as it flies by Mars, using the planet’s gravitational force to alter the spacecraft’s path on its way to the Jupiter system. NASA/JPL-Caltech The orbiter bound for Jupiter’s moon Europa will investigate whether the moon is habitable, but it first will get the help of Mars’ gravitational force to get to deep space.
On March 1, NASA’s Europa Clipper will streak just 550 miles (884 kilometers) above the surface of Mars for what’s known as a gravity assist — a maneuver to bend the spacecraft’s trajectory and position it for a critical leg of its long voyage to the Jupiter system. The close flyby offers a bonus opportunity for mission scientists, who will test their radar instrument and thermal imager.
Europa Clipper will be closest to the Red Planet at 12:57 p.m. EST, approaching it at about 15.2 miles per second (24.5 kilometers per second) relative to the Sun. For about 12 hours prior and 12 hours after that time, the spacecraft will use the gravitational pull of Mars to pump the brakes and reshape its orbit around the Sun. As the orbiter leaves Mars behind, it will be traveling at a speed of about 14 miles per second (22.5 kilometers per second).
The flyby sets up Europa Clipper for its second gravity assist — a close encounter with Earth in December 2026 that will act as a slingshot and give the spacecraft a velocity boost. After that, it’s a straightforward trek to the outer solar system; the probe is set to arrive at Jupiter’s orbit in April 2030.
“We come in very fast, and the gravity from Mars acts on the spacecraft to bend its path,” said Brett Smith, a mission systems engineer at NASA’s Jet Propulsion Laboratory in Southern California. “Meanwhile, we’re exchanging a small amount of energy with the planet, so we leave on a path that will bring us back past Earth.”
This animation depicts NASA’s Europa Clipper as it flies by the Red Planet. The spacecraft will use the planet’s gravity to bend its path slightly, setting up the next leg of its long journey to investigate Jupiter’s icy moon Europa. NASA/JPL-Caltech Harnessing Gravity
Europa Clipper launched from Kennedy Space Center in Florida on Oct. 14, 2024, via a SpaceX Falcon Heavy, embarking on a 1.8-billion-mile (2.9-billion-kilometer) trip to Jupiter, which is five times farther from the Sun than Earth is. Without the assists from Mars in 2025 and from Earth in 2026, the 12,750-pound (6,000-kilogram) spacecraft would require additional propellant, which adds weight and cost, or it would take much longer to get to Jupiter.
Gravity assists are baked into NASA’s mission planning, as engineers figure out early on how to make the most of the momentum in our solar system. Famously, the Voyager 1 and Voyager 2 spacecraft, which launched in 1977, took advantage of a once-in-a-lifetime planetary lineup to fly by the gas giants, harnessing their gravity and capturing data about them.
While navigators at JPL, which manages Europa Clipper and Voyager, have been designing flight paths and using gravity assists for decades, the process of calculating a spacecraft’s trajectory in relation to planets that are constantly on the move is never simple.
“It’s like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to build up the energy we need to get to Jupiter and Europa,” said JPL’s Ben Bradley, Europa Clipper mission planner. “Everything has to line up — the geometry of the solar system has to be just right to pull it off.”
About 4½ months after its launch, NASA’s Europa Clipper is set to perform a gravity as-sist maneuver as it flies by Mars on March 1. Next year the spacecraft will swing back by Earth for a final gravity assist before NASA/JPL-Caltech Refining the Path
Navigators sent the spacecraft on an initial trajectory that left some buffer around Mars so that if anything were to go wrong in the weeks after launch, Europa Clipper wouldn’t risk impacting the planet. Then the team used the spacecraft’s engines to veer closer to Mars’ orbit in what are called trajectory correction maneuvers, or TCMs.
Mission controllers have performed three TCMs to set the stage for the Mars gravity assist — in early November, late January, and on Feb. 14. They will conduct another TCM about 15 days after the Mars flyby to ensure the spacecraft is on track and are likely to conduct additional ones — upwards of 200 — throughout the mission, which is set to last until 2034.
Opportunity for Science
While navigators are relying on the gravity assist for fuel efficiency and to keep the spacecraft on their planned path, scientists are looking forward to the event to take advantage of the close proximity to the Red Planet and test two of the mission’s science instruments.
About a day prior to the closest approach, the mission will calibrate the thermal imager, resulting in a multicolored image of Mars in the months following as the data is returned and scientists process the data. And near closest approach, they’ll have the radar instrument perform a test of its operations — the first time all its components will be tested together. The radar antennas are so massive, and the wavelengths they produce so long that it wasn’t possible for engineers to test them on Earth before launch.
More About Europa Clipper
Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
Managed by Caltech in Pasadena, California, JPL leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall executes program management of the Europa Clipper mission. NASA’s Launch Services Program, based at Kennedy, managed the launch service for the Europa Clipper spacecraft.
Find more information about Europa Clipper here:
https://science.nasa.gov/mission/europa-clipper/
Check out Europa Clipper's Mars flyby in 3D News Media Contacts
Gretchen McCartney
Jet Propulsion Laboratory, Pasadena, Calif.
818-287-4115
gretchen.p.mccartney@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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Last Updated Feb 25, 2025 Related Terms
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2 min read Is There Potential for Life on Europa? We Asked a NASA Expert: Episode 52
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
That’s a great question. And it’s a question that NASA will seek to answer with the Europa Clipper spacecraft.
Europa is a moon of Jupiter. It’s about the same size as Earth’s Moon, but its surface looks very different. The surface of Europa is covered with a layer of ice, and below that ice, we think there’s a layer of liquid water with more water than all of Earth’s oceans combined.
So because of this giant ocean, we think that Europa is actually one of the best places in the solar system to look for life beyond the Earth.
Life as we know it has three main requirements: liquid water — all life here on Earth uses liquid water as a basis.
The second is the right chemical elements. These are elements like carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur. They’re elements that create the building blocks for life as we know it on Earth. We think that those elements exist on Europa.
The third component is an energy source. As Europa orbits around Jupiter, Jupiter’s strong gravity tugs and pulls on it. It actually stretches out the surface. And it produces a heat source called tidal heating. So it’s possible that hydrothermal systems could exist at the bottom of Europa’s ocean, and it’s possible that those could be locations for abundant life.
So could there be life on Europa? It’s possible. And Europa Clipper is going to explore Europa to help try to answer that question.
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Last Updated Feb 25, 2025 Related Terms
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