# Curiosity Used Its Last Chemistry Cup on Mars. The Answer Stays There. - Date: 2026-04-22 - Category: Space & Aerospace SAM extracted 21 organics from 3.5-billion-year-old Martian rock, including a candidate RNA/DNA precursor never before seen on the planet. The chemical cup that made it possible is now empty — and Congress killed the only program that would have brought the samples home. ---