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Electro-luminescently Cooled Zero-boil-off Propellant Depots Enabling Crewed Exploration of Mars
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By European Space Agency
Video: 00:01:00 Rover trials in a quarry in the UK showing a four-wheeled rover, known as Codi, using its robotic arm and a powerful computer vision system to pick up sample tubes.
The rover drives to the samples with an accuracy of 10cm, constantly mapping the terrain. Codi uses its arm and four cameras to locate the sample tube, retrieve it and safely store it on the rover – all of it without human intervention. At every stop, the rover uses stereo cameras to build up a 180-degree map of the surroundings and plan its next maneouvres. Once parked, the camera on top of the mast detects the tube and estimates its position with respect to the rover. The robotic arm initiates a complex choreography to move closer to the sample, fetch it and store it.
The sample tubes are a replica of the hermetically sealed samples inside which NASA’s Perseverance rover is collecting precious martian soil inside. To most people on Earth, they resemble lightsabres.
The reddish terrain, although not fully representative of Mars in terms of soil composition, has plenty of slopes and rocks of different sizes, similar to what a rover might encounter on the martian surface. Quarry testing is an essential next step in the development process, providing a unique and dynamic landscape that cannot be replicated indoors.
ESA continues to run further research using the rover to maintain and develop rover capabilities in Europe.
Read the full article: Rovers, lightsabres and a piglet.
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By NASA
Hubble Space Telescope Home NASA’s Hubble, MAVEN… Missions Hubble Home Overview About Hubble The History of Hubble Hubble Timeline Why Have a Telescope in Space? Hubble by the Numbers At the Museum FAQs Impact & Benefits Hubble’s Impact & Benefits Science Impacts Cultural Impact Technology Benefits Impact on Human Spaceflight Astro Community Impacts Science Hubble Science Science Themes Science Highlights Science Behind Discoveries Hubble’s Partners in Science Universe Uncovered Explore the Night Sky Observatory Hubble Observatory Hubble Design Mission Operations Missions to Hubble Hubble vs Webb Team Hubble Team Career Aspirations Hubble Astronauts News Hubble News Hubble News Archive Social Media Media Resources Multimedia Multimedia Images Videos Sonifications Podcasts E-books Lithographs Fact Sheets Glossary Posters Hubble on the NASA App More Online Activities 6 min read
NASA’s Hubble, MAVEN Help Solve the Mystery of Mars’ Escaping Water
NASA, ESA, STScI, John T. Clarke (Boston University); Processing: Joseph DePasquale (STScI) Mars was once a very wet planet as is evident in its surface geological features. Scientists know that over the last 3 billion years, at least some water went deep underground, but what happened to the rest? Now, NASA’s Hubble Space Telescope and MAVEN (Mars Atmosphere and Volatile Evolution) missions are helping unlock that mystery.
“There are only two places water can go. It can freeze into the ground, or the water molecule can break into atoms, and the atoms can escape from the top of the atmosphere into space,” explained study leader John Clarke of the Center for Space Physics at Boston University in Massachusetts. “To understand how much water there was and what happened to it, we need to understand how the atoms escape into space.”
Clarke and his team combined data from Hubble and MAVEN to measure the number and current escape rate of the hydrogen atoms escaping into space. This information allowed them to extrapolate the escape rate backwards through time to understand the history of water on the Red Planet.
Escaping Hydrogen and “Heavy Hydrogen”
Water molecules in the Martian atmosphere are broken apart by sunlight into hydrogen and oxygen atoms. Specifically, the team measured hydrogen and deuterium, which is a hydrogen atom with a neutron in its nucleus. This neutron gives deuterium twice the mass of hydrogen. Because its mass is higher, deuterium escapes into space much more slowly than regular hydrogen.
Over time, as more hydrogen was lost than deuterium, the ratio of deuterium to hydrogen built up in the atmosphere. Measuring the ratio today gives scientists a clue to how much water was present during the warm, wet period on Mars. By studying how these atoms currently escape, they can understand the processes that determined the escape rates over the last four billion years and thereby extrapolate back in time.
Although most of the study’s data comes from the MAVEN spacecraft, MAVEN is not sensitive enough to see the deuterium emission at all times of the Martian year. Unlike the Earth, Mars swings far from the Sun in its elliptical orbit during the long Martian winter, and the deuterium emissions become faint. Clarke and his team needed the Hubble data to “fill in the blanks” and complete an annual cycle for three Martian years (each of which is 687 Earth days). Hubble also provided additional data going back to 1991 – prior to MAVEN’s arrival at Mars in 2014.
The combination of data between these missions provided the first holistic view of hydrogen atoms escaping Mars into space.
These are far-ultraviolet Hubble images of Mars near its farthest point from the Sun, called aphelion, on December 31, 2017 (top), and near its closest approach to the Sun, called perihelion, on December 19, 2016 (bottom). The atmosphere is clearly brighter and more extended when Mars is close to the Sun.
Reflected sunlight from Mars at these wavelengths shows scattering by atmospheric molecules and haze, while the polar ice caps and some surface features are also visible. Hubble and MAVEN showed that Martian atmospheric conditions change very quickly. When Mars is close to the Sun, water molecules rise very rapidly through the atmosphere, breaking apart and releasing atoms at high altitudes. NASA, ESA, STScI, John T. Clarke (Boston University); Processing: Joseph DePasquale (STScI)
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A Dynamic and Turbulent Martian Atmosphere
“In recent years scientists have found that Mars has an annual cycle that is much more dynamic than people expected 10 or 15 years ago,” explained Clarke. “The whole atmosphere is very turbulent, heating up and cooling down on short timescales, even down to hours. The atmosphere expands and contracts as the brightness of the Sun at Mars varies by 40 percent over the course of a Martian year.”
The team discovered that the escape rates of hydrogen and deuterium change rapidly when Mars is close to the Sun. In the classical picture that scientists previously had, these atoms were thought to slowly diffuse upward through the atmosphere to a height where they could escape.
But that picture no longer accurately reflects the whole story, because now scientists know that atmospheric conditions change very quickly. When Mars is close to the Sun, the water molecules, which are the source of the hydrogen and deuterium, rise through the atmosphere very rapidly releasing atoms at high altitudes.
The second finding is that the changes in hydrogen and deuterium are so rapid that the atomic escape needs added energy to explain them. At the temperature of the upper atmosphere only a small fraction of the atoms have enough speed to escape the gravity of Mars. Faster (super-thermal) atoms are produced when something gives the atom a kick of extra energy. These events include collisions from solar wind protons entering the atmosphere or sunlight that drives chemical reactions in the upper atmosphere.
Mars was once a very wet planet. Scientists know that over the last 3 billion years, some of the water went underground, but what happened to the rest? Credit: NASA’s Goddard Space Flight Center; Lead Producer: Paul Morris; Mars Animations Producer: Dan Gallagher Serving as a Proxy
Studying the history of water on Mars is fundamental not only to understanding planets in our own solar system but also the evolution of Earth-size planets around other stars. Astronomers are finding more and more of these planets, but they’re difficult to study in detail. Mars, Earth and Venus all sit in or near our solar system’s habitable zone, the region around a star where liquid water could pool on a rocky planet; yet all three planets have dramatically different present-day conditions. Along with its sister planets, Mars can help scientists grasp the nature of far-flung worlds across our galaxy.
These results appear in the July 26 edition of Science Advances, published by the American Association for the Advancement of Science.
About the Missions
The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, Colorado, also supports mission operations at Goddard. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
MAVEN’s principal investigator is based at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder. LASP is also responsible for managing science operations and public outreach and communications. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the MAVEN mission. Lockheed Martin Space built the spacecraft and is responsible for MAVEN mission operations at Goddard. NASA’s Jet Propulsion Laboratory in Southern California provides navigation and Deep Space Network support. The MAVEN team is preparing to celebrate the spacecraft’s 10th year at Mars in September 2024.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contacts:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Ann Jenkins and Ray Villard
Space Telescope Science Institute, Baltimore, MD
Science Contact:
John T. Clarke
Boston University, Boston, MA
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Last Updated Sep 05, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Astrophysics Astrophysics Division Goddard Space Flight Center Hubble Space Telescope Mars MAVEN (Mars Atmosphere and Volatile EvolutioN) Missions Planetary Science Planets Science Mission Directorate The Solar System Keep Exploring Discover More Topics From Hubble and Maven
Hubble Space Telescope
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Hubble Science Highlights
MAVEN
The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission is the first mission devoted to understanding the Martian upper atmosphere.
Mars
Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited…
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By NASA
Mars: Perseverance (Mars 2020) Perseverance Home Mission Overview Rover Components Mars Rock Samples Where is Perseverance? Ingenuity Mars Helicopter Mission Updates Science Overview Objectives Instruments Highlights Exploration Goals News and Features Multimedia Perseverance Raw Images Images Videos Audio More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions The Solar System The Sun Mercury Venus Earth The Moon Mars Jupiter Saturn Uranus Neptune Pluto & Dwarf Planets Asteroids, Comets & Meteors The Kuiper Belt The Oort Cloud 3 min read
Behind the Scenes at the 2024 Mars 2020 Science Team Meeting
The Mars 2020 Perseverance Rover Science Team meets in person and online during the July 2024 team meeting in Pasadena, CA. Credits: R. Hogg and J. Maki. The Mars 2020 Science Team meets in Pasadena for 3 days of science synthesis
It has become a fun tradition for me to write a summary of our yearly in-person Science Team Meetings (2022 meeting and 2023 meeting). I’ve been particularly looking forward to this year’s update given the recent excitement on the team and in the public about Perseverance’s discovery of a potential biosignature, a feature that may have a biological origin but needs more data or further study before reaching a conclusion about the absence or presence of life.
This past July, ~160 members of the Mars 2020 Science Team met in-person in Pasadena—with another ~50 team members dialed in on-line—for three days of presentations, meetings, and team discussion. For a team that spends most of the year working remotely from around the world, we make the most of these rare opportunities for in-person discussion and synthesis of the rover’s latest science results.
We spent time discussing Perseverance’s most recent science campaign in the Margin unit, an exposure of carbonate-bearing rocks that occurs along the inner rim of Jezero crater. As part of an effort to synthesize what we’ve learned about the Margin unit over the past year, we heard presentations describing surface and subsurface observations collected from the rover’s entire payload. This was followed by a thought-provoking series of presentations that tackled the three hypotheses we’re carrying for the origin of this unit: sedimentary, volcanic (pyroclastic), or crystalline igneous.
Some of our liveliest discussion occurred during presentations about Neretva Vallis, Jezero’s inlet valley that once fed the sedimentary fan and lake system within the crater. Data from the RIMFAX instrument took center stage as we debated the origin and age relationship of the Bright Angel outcrop to other units we’ve studied in the crater.
This context is especially important because the Bright Angel outcrop is home to the Cheyava Falls rock, which contains intriguing features we’ve been calling “leopard spots,” small white spots with dark rims observed in red bedrock of Bright Angel. On the last day of the team meeting, data from our recent “Apollo Temple” abrasion at Cheyava Falls was just starting to arrive on Earth, and team members from the PIXL and SHERLOC teams were huddled in the hallway and at the back of the conference room trying to digest these new results in real time. We had special “pop-up” presentations during which SHERLOC reported compelling evidence for organics in the new abrasion, and PIXL showed interesting new data about the light-toned veins that crosscut this rock.
Between debates about the Margin unit, updates on recently published studies of the Jezero sedimentary fan sequence, and discussion of the newest rocks at Bright Angel, this team meeting was one of our most exciting yet. It also marked an important transition for the Mars 2020 science mission as we prepare to ascend the Jezero crater rim, leaving behind—at least for now—the rocks inside the crater. I can only imagine the interesting new discoveries we’ll make during the upcoming year, and I can’t wait to report back next summer!
Written by Katie Stack Morgan, Mars 2020 Deputy Project Scientist at NASA’s Jet Propulsion Laboratory
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By NASA
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
The cover of the HERC 2025 handbook, which is now available online. By Wayne Smith
Following a 2024 competition that garnered international attention, NASA is expanding its Human Exploration Rover Challenge (HERC) to include a remote control division and inviting middle school students to participate.
The 31st annual competition is scheduled for April 11-12, 2025, at the U.S. Space & Rocket Center, near NASA’s Marshall Space Flight Center in Huntsville, Alabama. HERC is managed by NASA’s Southeast Regional Office of STEM Engagement at Marshall. The HERC 2025 Handbook has been released, with guidelines for the new remote control (RC) division – ROVR (Remote-Operated Vehicular Research) – and detailing updates for the human-powered division.
“Our RC division significantly lowers the barrier to entry for schools who don’t have access to manufacturing facilities, have less funding, or who are motivated to compete but don’t have the technical mentorship required to design and manufacture a safe human-powered rover,” said Chris Joren, HERC technical coordinator. “We are also opening up HERC to middle school students for the first time. The RC division is inherently safer and less physically intensive, so we invite middle school teams and organizations to submit a proposal to be a part of HERC 2025.”
Another change for 2025 is the removal of task sites on the course for the human-powered rover division, allowing teams to focus on their rover’s design. Recognized as NASA’s leading international student challenge, the 2025 challenge aims to put competitors in the mindset of the Artemis campaign as they pitch an engineering design for a lunar terrain vehicle – they are astronauts piloting a vehicle, exploring the lunar surface while overcoming various obstacles.
“The HERC team wanted to put together a challenge that allows students to gain 21st century skills, workforce readiness skills, and skills that are transferable,” said Vemitra Alexander, HERC activity lead. “The students have opportunities to learn and apply the engineering design process model, gain public speaking skills, participate in community outreach, and learn the art of collaborating with their peers. I am very excited about HERC’s growth and the impact it has on the students we serve nationally and internationally.”
Students interested in designing, developing, building, and testing rovers for Moon and Mars exploration are invited to submit their proposals to NASA through Sept. 19.
More than 1,000 students with 72 teams from around the world participated in the 2024 challenge as HERC celebrated its 30th anniversary as a NASA competition. Participating teams represented 42 colleges and universities and 30 high schools from 24 states, the District of Columbia, Puerto Rico, and 13 other nations from around the world.
“We saw a massive jump in recognition, not only from within the agency as NASA Chief Technologist A.C. Charania attended the event, but with several of our international teams meeting dignitaries and ambassadors from their home countries to cheer them on,” Joren said. “The most impressive thing will always be the dedication and resilience of the students and their mentors. No matter what gets thrown at these students, they still roll up to the start line singing songs and waving flags.”
HERC is one of NASA’s eight Artemis Student Challenges reflecting the goals of the Artemis campaign, which seeks to land the first woman and first person of color on the Moon while establishing a long-term presence for science and exploration. NASA uses such challenges to encourage students to pursue degrees and careers in the STEM fields of science, technology, engineering, and mathematics.
Since its inception in 1994, more than 15,000 students have participated in HERC – with many former students now working at NASA, or within the aerospace industry.
To learn more about HERC, please visit:
https://www.nasa.gov/roverchallenge/home/index.html
Taylor Goodwin
Marshall Space Flight Center, Huntsville, Ala.
256.544.0034
taylor.goodwin@nasa.gov
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Last Updated Aug 28, 2024 Related Terms
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By NASA
NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) identical dual spacecraft are inspected and processed on dollies in a high bay of the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Thursday, Aug. 22. As the first multi-spacecraft orbital science mission to Mars, ESCAPADE’s twin orbiters will take simultaneous observations from different locations around the planet and reveal the real-time response to space weather and how the Martian magnetosphere changes over time.Credits: NASA/Kim Shiflett NASA and Blue Origin are preparing for the agency’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) mission, which begins on the inaugural launch of the company’s New Glenn rocket. The mission will study the solar wind’s interaction with the magnetosphere on Mars.
Blue Origin is targeting no earlier than Sunday, Oct. 13, for the launch of New Glenn-1 from Space Launch Complex 36 at Cape Canaveral Space Force Station in Florida.
Media interested in covering ESCAPADE launch activities for both NASA and Blue Origin must apply for media credentials. Deadlines for accreditation are as follows:
U.S. media and U.S. citizens representing international media must apply by 5 p.m. EDT on Monday, Sept. 30. International media without U.S. citizenship must apply by 5 p.m. on Tuesday, Sept. 10. Media accreditation requests should be submitted online at:
https://media.ksc.nasa.gov
A copy of NASA’s media accreditation policy is available online. For questions about accreditation, please email: ksc-media-accreditat@mail.nasa.gov. For other mission questions, please contact NASA Kennedy’s newsroom: 321-867-2468.
The ESCAPADE mission will use two identical spacecraft to investigate how the solar wind interacts with the hybrid magnetosphere on Mars and how this interaction drives the planet’s atmospheric escape. The mission is funded by NASA’s Heliophysics Division and is part of the NASA Small Innovative Missions for Planetary Exploration program. The ESCAPADE mission is led by the University of California, Berkeley’s Space Sciences Laboratory, and the spacecraft is designed by Rocket Lab. The agency’s Launch Services Program, based at NASA Kennedy, secured the launch service under the VADR (Venture-class Acquisition of Dedicated and Rideshare) contract.
NASA will post updates on launch preparations for the twin Martian orbiters on the ESCAPADE blog.
For more information about ESCAPADE, visit:
https://science.nasa.gov/mission/escapade
Para obtener información sobre cobertura en español en el Centro Espacial Kennedy o si desea solicitar entrevistas en español, comuníquese con Antonia Jaramillo at: antonia.jaramillobotero@nasa.gov, 321-501-8425, o Messod Bendayan, 256-930-1371.
-end-
Karen Fox
Headquarters, Washington
202-358-1600
karen.fox@nasa.gov
Laura Aguiar / Leejay Lockhart
Kennedy Space Center, Florida
321-867-2468
laura.aguiar@nasa.gov / leejay.lockhart@nasa.gov
Sarah Frazier
Goddard Space Flight Center
202-853-7191
sarah.frazier@nasa.gov
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Last Updated Aug 26, 2024 LocationNASA Headquarters Related Terms
EscaPADE (Escape and Plasma Acceleration and Dynamics Explorers) Commercial Space Goddard Space Flight Center Kennedy Space Center Science Mission Directorate View the full article
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