Linking Young Minds, Planetary Science, and the Future of Water
Following on from our Water in Space (Part 1) this second exploration deepens the search for water beyond Earth and what it teaches us about our own planet.
We’re especially inspired by Shrewsbury High School Sixth Formers, who are studying for the Girls’ Day School Trust’s Space Technology Diploma, designed to upskill young women across the GDST schools network in the sciences that will shape humanity’s future among the stars. Their fresh thinking and curiosity remind us that the next generation will inherit not only the results of exploration, but the responsibility to use that knowledge wisely.
Update: Clay Minerals – Water’s Hidden Signature
Scientists have discovered clay minerals in meteorites – particularly in samples such as Nakhla and Yamato 000593 that provide powerful evidence for the past presence of liquid water on Mars.
These clays, including Fe-rich smectite, saponite, and serpentine, form when volcanic rocks chemically interact with water. Their presence tells a story of ancient hydrothermal activity, echoing Earth’s early environments where heat and water danced together to create the right conditions for life.
Under microscopes, these minerals appear as tiny grains, tunnels, and spherules – fragile but unmistakable traces of once-flowing water, sealed within rock for millions of years.
💧 A Planet Once Alive with Water
The formation of these clays points to a time when Mars was geologically and hydrologically active – a world of volcanic heat, water-rock reactions, and possible prebiotic chemistry.
Through these interactions, essential carbon-based molecules could have emerged, giving Mars the potential to host microbial life.
For decades, scientists debated whether the clay minerals found in Martian meteorites were the result of Earth contamination. Today, the geochemical and isotopic evidence is clear: these minerals are Martian in origin. Their chemical “fingerprints” perfectly match the surface deposits seen by Mars orbiters and rovers, ending the long-standing debate.
🌊 Jezero Crater: Mars’ Ancient Lakebed
NASA’s Perseverance rover landed in Jezero Crater, an ancient lake basin roughly the size of Lake Constance on Earth. Billions of years ago, rivers carried sediments and minerals into this vast crater, forming deltas rich in clay and carbonate – materials known to preserve organic compounds and even fossil-like traces of life.
Since 2021, Perseverance has discovered mudstones laced with organic carbon, dubbed “leopard-spot” rocks, alongside unusual textures that may point to microbial influence. These discoveries confirm that Mars once had long-lived, water-rich environments capable of sustaining life’s chemistry.
“We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time.” (T.S. Elliot 1888 – 1965)
🌡️ Lessons for Earth and Beyond
The story of Martian clays is more than a cosmic curiosity. It’s a mirror held up to Earth’s own fragility for if Mars once had water, and lost it, the question we must ask is: could we do the same here?
Understanding how Mars’ water disappeared from its surface may hold vital clues for protecting our planet’s hydrological balance.
If we fail to sustain Earth’s living systems in harmony with Nature, we stand very little chance of maintaining and developing life on any other world. Geoforming demands wisdom, not just technology.
🛰️ Toward Geoforming: Water as the Universal Engineer
As our focus shifts toward geoforming – the process of transforming planetary environments to support life, water again takes centre stage.
Whether extracted from comets, mined from asteroids, or generated through biological and chemical reactions, water is the activator of habitability.
Future missions may seed barren worlds with microbial pioneers capable of producing or cycling water, yet, these experiments in planetary renewal must begin with humility and with lessons learned from how we treat our own ocean, aquifers, and atmosphere.
Water is not only life’s medium; it is the memory of every planet it touches.
🌠 Continuing the Conversation
At World of Water, our exploration of Space Water and Geoforming isn’t limited to science – it extends into imagination and storytelling. Through our companion creative projects like “Gina: The Interstella Estate Agent” and the “Adventures in Space Colouring Book”, we’re opening new ways to think about how water, life, and human curiosity connect across worlds.
We welcome educators, students, researchers, and storytellers to collaborate with us – sharing insights, resources, and creative ideas that help make planetary water awareness part of everyday learning.
Because whether we’re studying Martian clays or crafting interstellar stories, one truth remains: where there is water, there is hope. 💧
* Further Reading
1. Water in the Solar System (Encrenaz, 2008)
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Description:
Françoise Encrenaz’s 2008 Annual Review of Astronomy & Astrophysics paper provides a comprehensive review of water throughout the Solar System. The article discusses the distribution and chemical state of water—whether as vapor, ice, or hydrated minerals—across planets, moons, comets, and small bodies, and compares evidence from different observational platforms and missions. This review is a key reference for understanding how water exists and cycles in our planetary neighborhood. -
Link: https://www.annualreviews.org/doi/10.1146/annurev.astro.46.060407.145220
2. Interstellar water chemistry: from laboratory to observations (van Dishoeck, Herbst & Neufeld, 2013)
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Description:
Published in Chemical Reviews, this article by van Dishoeck, Herbst, & Neufeld (2013) summarizes interstellar water chemistry. The review integrates laboratory studies and astronomical observations to explain water formation in interstellar clouds, its transfer into proto-planetary disks, and mechanisms by which it becomes embedded in forming planetary systems. It establishes links between cosmic chemistry, astrochemical models, and the delivery of water to planets.
3. The origin, history and role of water in the evolution of the inner Solar System (Russell, Ballentine & Grady, 2017)
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Description:
This review, published in Philosophical Transactions of the Royal Society A, focuses on how water shaped the inner Solar System, especially Mars, Earth, and Venus. Russell, Ballentine, and Grady examine isotopic evidence from meteorites and planetary samples, discuss water sources and delivery mechanisms, and analyze how water influenced planetary atmospheres and geological evolution. -
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4. The Main Belt Comets and Ice in the Solar System (Snodgrass et al., 2017)
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Description:
Snodgrass et al. (2017) review main-belt comets—objects in the asteroid belt exhibiting comet-like activity. The paper discusses observations of water and ice in these bodies, the mechanisms driving their activity, and why such findings reshape our understanding of water reservoirs and delivery in the inner Solar System.
5. Tracing Water through the Stages of Planet Formation (Tobin et al., Nature, 2023)
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Description:
Tobin et al. (2023), published in Nature, present groundbreaking isotopic observations linking water in young planet-forming disks to comets and protostars. Their work tracks how water, formed as ice in interstellar clouds, survives the formation of stars and disks, and is inherited with little alteration by new planetary systems. -
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* All above citations are peer-reviewed works in their respective fields.
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