ALT Graphic showing the Spacetober challenge prompt list for 2025. The background is an orange gradient with a black box on top, with the number of each day and the corresponding prompt for each in white text on top. 1: Launch, 2: Planet(s), 3: Space Weather, 4: Moon, 5: Voyager, 6: Constellation, 7: Space Agency, 8: Propulsion, 9: Nebula, 10: Artemis II, 11: Asteroid, 12: Eclipse, 13: Near or Deep Space Network, 14: Spacecraft, 15: Black Hole, 16: Parachute, 17: Historic Person(s), 18: Mars/Mars Mission, 19: Crew Capsule, 20: Telescope, 21: Star, 22: Lunar Landing, 23: Space Station, 24: Jet/Plane, 25: Historic Mission(s), 26: Earth, 27: Habitat, 28: Astronaut/Cosmonaut, 29: Orbit, 30: Galaxy, 31: Future