Exoplanet Atmosphere News & Articles See All News Article5 Min ReadExoplanets Need to Be Prepared for Extreme Space Weather, Chandra Finds Multimedia Go To Galleries Go To Galleries Keep Exploring Discover More Topics From NASA Rubin Comet Catchers Amendment 22: C.8 Yearly Opportunities for Research in Planetary Defense Step-2 Proposal Due Date Reset to December 3, 2025 Amendment 21: F.15 Artemis III Participating Scientist Program Step-2 proposal Due Date Reset to November 25, 2025. Amendment 20: Exoplanets Research Program Step-1 Due Date Deferred to December 3, 2025.