Nuclear Astrophysics with Stardust Using presolar grains as observational records of stellar nucleosynthesis, stellar physics, and Galactic chemical evolution. Testing Nuclear Reaction Rates Closing the loop between accelerator-based nuclear physics and the isotopic record preserved in stardust. Machine Learning in Cosmochemistry Pattern discovery in high-dimensional, multimodal datasets of isotopic, spectroscopic, and structural grain measurements. Microanalytical Techniques High-precision, single-grain isotope analysis combining NanoSIMS and resonance ionization mass spectrometry across the periodic table.