Space: The Final Frontier for Standards
The Final Frontier for Standards: A Journey into the Unknown
On August 24, 2025, a custom container carried seven carefully selected materials into the vastness of space, traveling at an astonishing 17,500 mph. Nestled atop a Falcon 9 rocket, these materials included house dust, freeze-dried human liver, and cholesterol, alongside four other scientific specimens, bound for the International Space Station (ISS). These reference materials, thoroughly studied and well-measured, hold immense significance for both Earth and space exploration.
The National Institute of Standards and Technology (NIST), in collaboration with the National Oceanic and Atmospheric Administration (NOAA) Office of Space Commerce and the biotech company Rhodium Scientific, embarked on this mission to advance U.S. leadership in the space sector. The goal is to support the development of innovative commercial and scientific capabilities in outer space, aligning with recent executive orders on U.S. activities in space.
What are Reference Materials?
Reference materials, ranging from spinach and cement to human fecal matter, reside in a Maryland warehouse, awaiting shipment to companies and scientists worldwide. NIST's reference materials are crucial for various research and industries, providing a basis for comparison and calibration. For instance, NIST's cholesterol reference material aids medical labs in ensuring accurate cholesterol measurements, a vital quality control measure for health monitoring.
The Unique Journey of Standard Reference Materials (SRMs)
Six of the seven materials on this mission are SRMs, meeting NIST's highest standard for measurement. These include cholesterol, tripalmitin, house dust, creatinine, urea, and uric acid. The seventh sample, human liver, is a reference material, the next-highest standard. SRMs are essential for understanding the effects of space on everyday objects, as space becomes a place for living, research, and business.
The Importance of Space Research
Space affects people and things in unexpected ways. Astronauts experience bone density loss and cardiovascular system weaknesses due to low gravity. Radiation from the Sun and stars, more potent in space, can cause chemical changes in materials. For instance, epinephrine, a life-saving drug, transforms into poisonous benzoic acid in space, posing risks to astronauts.
However, space research also offers benefits. Growing protein crystals in microgravity is easier, leading to advancements in cancer drug development. The ISS scientists studied the cancer drug Keytruda, which formed more evenly in microgravity, resulting in a more convenient injectable version.
The Role of Standards in Space
Dianne Poster, NIST research chemist and senior adviser to NOAA's Office of Space Commerce, emphasizes the importance of standards in space research and manufacturing. Standards ensure accurate measurements and communication across time and space, enabling reproducibility of experiments.
The Mission's Impact
The seven SRMs will provide valuable insights into the effects of space on human health and materials. NIST will use advanced techniques to measure any chemical changes during their time on the ISS. These SRMs will be available to researchers and companies worldwide, accelerating space research and fostering a more dynamic and scalable space economy.
The Future of Space Standards
NIST aims to develop the first physical artifact reference materials for space. These SRMs will be crucial for medical testing and understanding the stability of molecules in space and on Earth. As space exploration expands, standards will play a vital role in creating a resilient and self-sustaining ecosystem for research and commerce.
