Space and Tech

Jupiter’s moons hide giant subsurface oceans − Europa Clipper is one of 2 missions on their way to see if these moons could support life

NASA’s Europa Clipper and ESA’s JUICE missions aim to explore Jupiter’s icy moons, focusing on the potential habitability of their underground oceans, particularly Europa’s, by gathering vital scientific data.

Published

5 months ago

October 15, 2024

The Conversation

file 20230407 28 6r7tcb.jpg?ixlib=rb 4.1 — The surface of Europa – one of Jupiter’s moons – is a thick layer of solid ice. NASA/JPL-Caltech/SETI Institute, CC BY-SA

Mike Sori, Purdue University

On Oct. 14, 2024, NASA launched a robotic spacecraft named Europa Clipper to Jupiter’s moons. Clipper will reach the ice-covered Jovian moon Europa in 2030 and spend several years collecting and sending valuable data on the moon’s potential habitability back to Earth.

Clipper isn’t the only mission highlighting researchers’ interest in Jupiter and its moons.

On April 13, 2023, the European Space Agency launched a rocket carrying a spacecraft destined for Jupiter. The Jupiter Icy Moons Explorer – or JUICE – will spend at least three years on Jupiter’s moons after it arrives in 2031.

I’m a planetary scientist who studies the structure and evolution of solid planets and moons in the solar system.

There are many reasons my colleagues and I are looking forward to getting the data that Europa Clipper and JUICE will hopefully be sending back to Earth in the 2030s. But perhaps the most exciting information will have to do with water. Three of Jupiter’s moons – Europa, Ganymede and Callisto – are home to large, underground oceans of liquid water that could support life.

Four moons next to a large red spot on the surface of Jupiter. — This composite image shows, from top to bottom, Io, Europa, Ganymede and Callisto next to Jupiter. NASA, CC BY-ND

Meet Io, Europa, Ganymede and Callisto

Jupiter has dozens of moons. Four of them in particular are of interest to planetary scientists.

Io, Europa, Ganymede and Callisto are, like Earth’s Moon, relatively large, spherical complex worlds. Two previous NASA missions have sent spacecraft to orbit the Jupiter system and collected data on these moons. The Galileo mission orbited Jupiter from 1995 to 2003 and led to geological discoveries on all four large moons. The Juno mission is still orbiting Jupiter today and has provided scientists with an unprecedented view into Jupiter’s composition, structure and space environment.

These missions and other observations revealed that Io, the closest of the four to its host planet, is abuzz with geological activity, including lava lakes, volcanic eruptions and tectonically formed mountains. But it is not home to large amounts of water.

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Europa, Ganymede and Callisto, in contrast, have icy landscapes. Europa’s surface is a frozen wonderland with a young but complex history, possibly including icy analogs of plate tectonics and volcanoes. Ganymede, the largest moon in the entire solar system, is bigger than Mercury and has its own magnetic field generated internally from a liquid metal core. Callisto appears somewhat inert compared to the others, but serves as a valuable time capsule of an ancient past that is no longer accessible on the youthful surfaces of Europa and Io.

Most exciting of all: Europa, Ganymede and Callisto all almost certainly possess underground oceans of liquid water.

A diagram showing a cutaway of Europa. — Warmth from Europa’s interior and tidal energy from Jupiter likely maintain a massive liquid ocean beneath the moon’s icy surface. NASA/JPL-Caltech/Michael Carroll

Ocean worlds

Europa, Ganymede and Callisto have chilly surfaces that are hundreds of degrees below zero. At these temperatures, ice behaves like solid rock.

But just like Earth, the deeper underground you go on these moons, the hotter it gets. Go down far enough and you eventually reach the temperature where ice melts into water. Exactly how far down this transition occurs on each of the moons is a subject of debate that scientists hope to resolve with JUICE and Europa Clipper. While the exact depths are still uncertain, scientists are confident that these oceans exist.

The best evidence of these oceans comes from Jupiter’s magnetic field. Saltwater is electrically conductive. So as these moons travel through Jupiter’s magnetic field, they generate a secondary, smaller magnetic field that signals to researchers the presence of an underground ocean. Using this technique, planetary scientists have been able to show that the three moons contain underground oceans. And these oceans are not small – Europa’s ocean alone might have more than double the water of all of Earth’s oceans combined.

An obvious and tantalizing next question is whether these oceans can support extraterrestrial life. Liquid water is an important piece of what makes for a habitable world, but far from the only requirement for life. Life also needs energy and certain chemical compounds in addition to water to flourish. Because these oceans are hidden beneath miles of solid ice, sunlight and photosynthesis are out. But it’s possible other sources could provide the needed ingredients.

On Europa, for example, the liquid water ocean overlays a rocky interior. That rocky seafloor could provide energy and chemicals through underwater volcanoes that could make Europa’s ocean habitable. But it is also possible that Europa’s ocean is a sterile, inhospitable place – scientists need more data to answer these questions.

Artist's impression of the JUICE spacecraft approaching Jupiter and the jovian moons. — The Jupiter Icy Moons Explorer spacecraft will travel for eight years before reaching Jupiter. ESA/ATG medialab/NASA/JPL/University of Arizona/J. Nichols

Upcoming missions from ESA and NASA

Europa Clipper and JUICE are set up to give scientists game-changing information about the potential habitability of Jupiter’s moons. While both missions will gather data on multiple moons, JUICE will spend time orbiting and focusing on Ganymede, and Europa Clipper will make dozens of close flybys of Europa.

Both of the spacecraft will carry a suite of scientific instruments built specifically to investigate the oceans. Onboard radar will allow Europa Clipper and JUICE to probe into the moons’ outer layers of solid ice. Radar could reveal any small pockets of liquid water in the ice, or, in the case of Europa, which has a thinner outer ice layer than Ganymede and Callisto, hopefully detect the larger ocean.

Magnetometers will also be on both missions. These tools will give scientists the opportunity to study the secondary magnetic fields produced by the interaction of conductive oceans with Jupiter’s field in great detail and will hopefully give researchers clues to salinity and volumes of the oceans.

Scientists will also observe small variations in the moons’ gravitational pulls by tracking subtle movements in both spacecrafts’ orbits, which could help determine if Europa’s seafloor has volcanoes that provide the needed energy and chemistry for the ocean to support life.

Finally, both craft will carry a host of cameras and light sensors that will provide unprecedented images of the geology and composition of the moons’ icy surfaces.

Maybe one day, a spacecraft will be able to drill through the miles of solid ice on Europa, Ganymede or Callisto and explore oceans directly. Until then, observations from spacecraft like Europa Clipper and JUICE are scientists’ best bet for learning about these ocean worlds.

When Galileo discovered these moons in 1609, they were the first objects known to directly orbit another planet. Their discovery was the final nail in the coffin of the theory that Earth – and humanity – resides at the center of the universe. Maybe these worlds have another humbling surprise in store.

This article, originally published April 10, 2023, has been updated with details about the Europa Clipper launch.

Mike Sori, Assistant Professor of Planetary Science, Purdue University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/

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Science

Touchdown! Firefly’s Blue Ghost Successfully Lands on the Moon

Published

7 days ago

March 2, 2025

Rod Washington

Moon Landing

In a significant milestone for space exploration, Firefly Aerospace’s Blue Ghost Mission 1 made a successful landing on the Moon at 3:34 a.m. EST on Sunday. Positioned near the volcanic feature of Mons Latreille within Mare Crisium, a vast basin exceeding 300 miles in diameter, this event marks a pivotal moment in NASA’s initiatives concerning lunar exploration.

This successful moon landing represents the first delivery under NASA’s Commercial Lunar Payload Services (CLPS) initiative for Firefly Aerospace, and it adds another achievement to the Artemis campaign aimed at returning humans to the Moon. The Blue Ghost lander now rests upright and stable on the lunar surface, ready to begin its suite of scientific operations.

The Blue Ghost craft is carrying ten cutting-edge NASA science and technology instruments designed to perform a variety of functions over approximately one lunar day, which translates to about 14 Earth days. Acting Administrator Janet Petro highlighted the importance of this mission, stating, “This incredible achievement demonstrates how NASA and American companies are leading the way in space exploration for the benefit of all.” The lessons learned from this mission will enhance future safety protocols for scientific exploration on the Moon and beyond.

Following its launch from NASA’s Kennedy Space Center on January 15, the Blue Ghost traveled over 2.8 million miles. During this journey, it downlinked more than 27 gigabytes of data while conducting several critical science operations. One notable achievement included signal tracking from the Global Navigation Satellite System (GNSS) at a record distance of 246,000 miles, validating the potential for similar positioning systems to be used effectively on the Moon.

Nicky Fox, associate administrator for science at NASA Headquarters, emphasized the significance of this mission in laying the groundwork for future human presence on the Moon: “The science and technology we send to the Moon now helps prepare the way for future NASA exploration and long-term human presence to inspire the world for generations to come.”

The instruments aboard the Blue Ghost will perform a variety of tasks during their lunar surface operations, including testing advanced drilling technology, collecting regolith samples, and developing lunar dust mitigation strategies. The insights gained from these experiments will contribute to our understanding of how space weather and cosmic forces interact with Earth.

As operations continue, the team intends to capture stunning imagery of the lunar sunset and investigate the behaviors of lunar dust during dusk conditions—an occurrence previously documented by Apollo 17 astronaut Eugene Cernan. Following the lunar sunset, the lander will remain functional for several hours into the lunar night.

Firefly Aerospace’s CEO, Jason Kim, expressed gratitude to NASA for the partnership and outlined the significance of this mission. “Blue Ghost’s successful Moon landing has laid the groundwork for the future of commercial exploration across cislunar space,” he stated, adding, “We’re now looking forward to more than 14 days of surface operations to unlock even more science data that will have a substantial impact on future missions to the Moon and Mars.”

In total, five companies have been awarded 11 lunar deliveries under the CLPS initiative, propelling the lunar economy forward with over 50 instruments being sent to various lunar locations, including the lunar South Pole. With a cumulative maximum contract value of $2.6 billion through 2028, the CLPS initiative is set to revolutionize how we explore and utilize the Moon’s resources.

As we celebrate this monumental achievement, it is clear that the collaboration between NASA and companies like Firefly Aerospace is paving the way for a new era of exploration, promising exciting discoveries that will benefit our understanding of the cosmos and our own planet for generations to come.

Learn more about NASA’s CLPS initiative at:

https://www.nasa.gov/clps

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Space and Tech

Blue Origin Announces Crew for New Shepard’s 31st Mission

🚀 Exciting news! Blue Origin announces its all-female crew for New Shepard’s NS-31 mission, featuring inspiring leaders like Katy Perry and Gayle King! 🌟

Published

1 week ago

February 28, 2025

Rod Washington

Blue Origin has exciting news as it announces the six remarkable individuals selected to fly on the NS-31 mission, the 11th human flight of its New Shepard program. This mission, set to launch this spring, features an inspiring all-female crew comprised of Aisha Bowe, Amanda Nguyen, Gayle King, Katy Perry, Kerianne Flynn, and Lauren Sánchez. These extraordinary women aim not only to explore the wonders of space but also to empower and inspire future generations.

Meet the NS-31 Crew

Aisha Bowe
Aisha is a former NASA rocket scientist and a dedicated advocate for STEM education. As the CEO of STEMBoard, she leads an engineering firm that has made waves in the industry, being recognized twice on the Inc. 5000 list of America’s fastest-growing private companies. Additionally, she founded LINGO, an edtech company focused on providing tech skills to students worldwide. Inspired by her own journey from community college to space, Aisha hopes her experience will motivate young people, particularly in the Bahamas, to chase their dreams.

Amanda Nguyen
Amanda is a bioastronautics research scientist with an impressive academic background, having graduated from Harvard and conducted research at prominent institutions like MIT and NASA. She played a role in the last NASA shuttle mission and is renowned for her advocacy work for sexual violence survivors, earning her a Nobel Peace Prize nomination. As the first Vietnamese and Southeast Asian woman astronaut, Amanda’s flight symbolizes a powerful reconciliation between the United States and Vietnam, using science as a pathway to peace.

Gayle King
An award-winning journalist and co-host of CBS Mornings, Gayle King has a reputation for her heartfelt interviews and thought-provoking discussions. With a career built on compassion and insight, she embraces new challenges, including being part of Blue Origin’s first all-female flight team. Gayle looks forward to stepping outside her comfort zone and experiencing the thrill of space travel.

Katy Perry
As one of the best-selling female artists of all time, Katy Perry brings her star power to the NS-31 mission. Beyond her music career, she is a passionate advocate for various philanthropic causes, serving as a UNICEF Goodwill Ambassador. Through her Firework Foundation, Katy inspires underserved children to express themselves through the arts. Being part of this historic all-female crew fills her with pride, and she hopes her journey serves as a beacon of inspiration for her daughter and all aspiring dreamers.

Kerianne Flynn
After successful careers in fashion and human resources, Kerianne Flynn dedicated the last decade to community-building and storytelling through nonprofit work and film production. Her recent projects explore crucial social themes, including women in Hollywood and fair pay advocacy. With a lifelong passion for exploration and adventure, Kerianne aims to inspire her son, Dex, and a new generation of dreamers with her flight aboard New Shepard.

Lauren Sánchez
Lauren is an Emmy Award-winning journalist, bestselling author, and licensed helicopter pilot. As Vice Chair of the Bezos Earth Fund, she is committed to addressing pressing climate issues. In 2016, she founded Black Ops Aviation, the first female-owned aerial film and production company. Her children’s book, The Fly Who Flew to Space, became a New York Times bestseller. Lauren’s goal is to motivate the next generation of explorers to reach for the stars.

A Historic Mission

The NS-31 mission is a remarkable milestone for Blue Origin, being the first all-female flight crew since Valentina Tereshkova’s solo flight in 1963. This mission marks the 31st flight in New Shepard’s history, with the program having successfully flown 52 individuals above the Kármán line, the globally recognized boundary of space.

Read the press release: https://www.blueorigin.com/fr-FR/news/new-shepard-ns-31-mission

As anticipation builds for the upcoming launch, we celebrate these extraordinary women and their commitment to breaking barriers and inspiring future generations to follow their dreams. For those interested in flying on a future New Shepard mission, additional details can be found at BlueOrigin.com/New-Shepard/Fly.

Stay tuned for more updates as we approach this exciting launch!

Source: Blue Origin

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Space and Tech

Blue Origin’s New Shepard Completes 30th Mission to Space

Blue Origin completed its 30th New Shepard flight, marking its tenth human spaceflight and transporting 52 individuals to space. The mission featured a diverse astronaut crew, underscoring the company’s commitment to expanding access to space exploration.

Published

2 weeks ago

February 25, 2025

Rod Washington

On a remarkable day for space exploration, Blue Origin celebrated a significant milestone with the successful completion of its 30th flight of the New Shepard program, marking the tenth human spaceflight for the company. This mission showcased a diverse crew of astronauts, featuring Lane Bess, Jesús Calleja, Elaine Chia Hyde, Dr. Richard Scott, Tushar Shah, and an undisclosed sixth member. Notably, Lane Bess flew for the second time, becoming the fourth New Shepard customer to embark on multiple journeys to the edge of space.

New Shepard’s 30th Mission

With this latest flight, New Shepard has now transported a total of 52 individuals into space, including several repeat astronauts. This achievement underscores Blue Origin’s commitment to expanding access to space and fostering a growing community of space travelers.

Phil Joyce, Senior Vice President of New Shepard, expressed his excitement about the diverse backgrounds of the crew, stating, “There’s nothing like seeing the diversity among our crews. This mission brought together people from all over the world—scientists, doctors, entrepreneurs, and adventurers. It’s always inspiring to hear their unique perspectives about the life-changing impact of seeing Earth from space. Huge thanks to our customers for supporting our mission to build a road to space for the benefit of Earth.”

The New Shepard program continues to resonate with those eager to experience the wonder of space travel. For those interested in joining a future mission, more information can be found here. Additionally, commemorative merchandise from today’s landmark flight is available for purchase at the Blue Origin Shop, allowing enthusiasts to own a piece of space history.

As New Shepard moves forward, it not only paves the way for future adventures but also inspires us all to dream big and reach for the stars. Stay tuned for more updates on upcoming missions and the continued journey to making space accessible for everyone.

Read the news release from Blue Origin: https://www.blueorigin.com/news/new-shepard-ns-30-mission

Watch a full replay of today’s flight below.

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/

STM Daily News is a vibrant news blog dedicated to sharing the brighter side of human experiences. Emphasizing positive, uplifting stories, the site focuses on delivering inspiring, informative, and well-researched content. With a commitment to accurate, fair, and responsible journalism, STM Daily News aims to foster a community of readers passionate about positive change and engaged in meaningful conversations. Join the movement and explore stories that celebrate the positive impacts shaping our world.

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