NASA issues Amendment 44 final text for B.2 Heliophysics Foundational Research

NASA's ROSES-2025 Amendment 44 releases the final text and the Step-1 due date for B.2 Heliophysics Foundational Research (HFR); the amendment will be posted on or about February 3, 2026, on the NASA research opportunity homepage at https://solicitation.nasaprs.com/ROSES2025, according to the announcement.

B.2 HFR solicits investigations that advance the fundamental physical understanding of the Sun–Heliosphere–Planetary system, with emphasis on uncovering and characterizing underlying drivers, couplings, and governing processes across spatial and temporal scales, from the solar interior to planetary environments.

The program element focuses on foundational science — research that seeks first-principle mechanisms, system connectivity, and emergent behavior — rather than directly developing or optimizing predictive or operational capabilities. The announcement notes that outcomes may inform future prediction frameworks or applied models, but the primary objective is to build a deeper and more coherent physical understanding of the heliophysics system.

HFR is intended to support forward-looking, high-impact research at the forefront of heliophysics that motivates and enables future missions, programs, and investments.

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