Roles and Needs of Laboratory Astrophysics in NASAs Space and Earth Science Mission

Laboratory astrophysics and complementary theoretical calculations are the foundations of astronomy and astrophysics and will remain so into the foreseeable future. The mission enabling impact of laboratory astrophysics ranges from the scientific conception stage for airborne and space-based observatories, all the way through to the scientific return of these missions. It is our understanding of the under-lying physical processes and the measurements of critical physical parameters that allows us to address fundamental questions in astronomy and astrophysics. In this regard, laboratory astrophysics is much like detector and instrument development at NASA. These efforts are necessary for the success of astronomical research being funded by NASA. Without concomitant efforts in all three directions (observational facilities, detector/instrument development, and laboratory astrophysics) the future progress of astronomy and astrophysics is imperiled. In addition, new developments in experimental technologies have allowed laboratory studies to take on a new role as some questions which previously could only be studied theoretically can now be addressed directly in the lab. With this in mind we, the members of the AAS Working Group on Laboratory Astrophysics (WGLA), have prepared this White Paper on the laboratory astrophysics infrastructure needed to maximize the scientific return from NASA’s space and Earth sciences program.

💡 Research Summary

The white paper authored by the AAS Working Group on Laboratory Astrophysics makes a compelling case that laboratory astrophysics (LA) is as essential to NASA’s space and Earth‑science missions as the observatories themselves and the detectors that record their data. From the earliest concept‑development phase, LA supplies the fundamental physical parameters—atomic and molecular transition probabilities, solid‑state optical constants, plasma reaction rates, thermodynamic data, and more—that determine which wavelengths to observe, what sensitivities are required, and how to design the mission’s scientific objectives. Without these laboratory measurements, mission planners would be forced to rely on uncertain theoretical estimates, jeopardizing both the feasibility of the mission and the interpretability of its data.

The paper delineates four distinct stages where LA contributes: (1) Science concept and feasibility – laboratory data define target selection, instrument bandpasses, and required calibration standards; (2) Detector and instrument development – material properties, low‑temperature behavior, radiation damage thresholds, and surface physics are measured in the lab to guide the engineering of CCDs, infrared arrays, X‑ray microcalorimeters, and other sensors; (3) Mission operations and data acquisition – real‑time calibration, line identification, and background subtraction all depend on up‑to‑date laboratory cross‑sections and rate coefficients; and (4) Post‑mission data analysis – the conversion of raw spectra into physical quantities (e.g., abundances, temperatures, magnetic fields) relies on laboratory‑validated models. In each stage, the authors argue that LA functions like a “third leg” of the mission tripod; if any leg is missing, the whole structure is unstable.

A major thrust of the document is the rapid evolution of experimental capabilities. Advances in high‑intensity lasers, ultra‑high‑vacuum chambers, cryogenic cooling, and ion‑beam facilities now permit direct recreation of astrophysical conditions that were previously only accessible to theory. For example, high‑energy density plasma experiments can reproduce the non‑equilibrium ionization states found in supernova remnants, while laboratory astro‑chemistry setups can simulate the complex organic chemistry of interstellar ices under realistic UV irradiation. These technological breakthroughs expand the scope of questions that LA can address, thereby increasing the scientific return of missions such as the James Webb Space Telescope, the upcoming Lynx X‑ray Observatory, and Earth‑observing platforms studying atmospheric chemistry.

Despite these opportunities, the authors identify a systemic shortfall in the United States’ LA infrastructure. Existing facilities are aging, funding is short‑term and fragmented, and there is a lack of coordinated data repositories that adhere to FAIR (Findable, Accessible, Interoperable, Reusable) principles. The paper calls for a sustained, multi‑agency investment strategy that treats LA on par with detector development and observatory construction. Specific recommendations include: (a) establishing a network of modern, high‑throughput laboratory facilities dedicated to astrophysical measurements; (b) creating long‑term career pathways (fellowships, tenure‑track positions) to retain expertise; (c) developing centralized, open databases that link laboratory results directly to mission archives; (d) fostering partnerships with industry to leverage cutting‑edge instrumentation; and (e) encouraging international collaboration to share costly infrastructure and avoid duplication.

In conclusion, the white paper asserts that the future progress of NASA’s astrophysics and Earth‑science programs is inseparable from a robust laboratory astrophysics program. Accurate laboratory measurements are the linchpin that transforms raw photons into physical insight, enabling the community to answer fundamental questions about the origin of elements, the physics of extreme environments, and the chemistry of planetary atmospheres. By securing stable funding, modernizing facilities, and integrating LA data into the mission lifecycle, NASA can maximize the scientific return of its investments and maintain leadership in exploring the cosmos.