As of May 27, 2026, NASA’s Nancy Grace Roman Space Telescope is targeted for launch no earlier than September 2026, the European Space Agency lists Plato for January 2027, the Japan Aerospace Exploration Agency lists Martian Moons eXploration for fiscal year 2026, and China’s Chang’e-7 lunar mission is scheduled for 2026. Global space exploration missions 2026 and 2027 are concentrated in four categories: lunar surface delivery, human exploration preparation, planetary science, and astronomical observatories. The dates remain planning dates, launch targets, or arrival targets rather than guaranteed outcomes, because deep-space missions depend on spacecraft readiness, launch vehicle availability, planetary alignment, regulatory clearances, and mission assurance reviews.