President Donald J. Trump awarded the Artemis II crew — NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen — the Congressional Space Medal of Honor on Aug. 28, 2026, during a ceremony at NASA's Johnson Space Center in Houston. The honor recognizes their service during the first crewed lunar-vicinity mission in over half a century. During the same event, Trump signed an Executive Order establishing a NASA-led U.S. Space Academy intended to strengthen the nation's space workforce and develop the next generation of space leaders. The academy has drawn attention from both space-policy and defense communities, with analysts questioning whether a new source of commissioned officers is needed alongside existing institutions.

Ariane 6 launched the Meteosat Third Generation–Imager 2 (MTG-I2) weather satellite from Europe's Spaceport in French Guiana on 27 August 2026 at 22:11 CEST (20:11 UTC), or 17:10 local time (20:10 UTC). The mission was Ariane 6's ninth flight overall, its fourth of 2026, and its first to geostationary transfer orbit — a significant expansion of the launcher's demonstrated mission envelope. MTG-I2 joins two other MTG satellites already in orbit for Eumetsat and carries a Lightning Imager and a Flexible Combined Imager, providing unprecedented detail for European weather forecasting and nowcasting of severe weather events. ESA has simultaneously accelerated its launcher ramp-up, signing €543.6 million in contracts under the European Launcher Challenge, requiring participating providers to demonstrate successful orbital launches no later than 2027.

NASA's Nancy Grace Roman Space Telescope is poised to launch on Aug. 30, 2026, on a mission to investigate some of the deepest mysteries in astrophysics. The observatory will tackle dark energy — the enigmatic force driving the accelerating expansion of the universe — as well as dark matter, exoplanet detection, and a broad range of other astrophysical phenomena. With a field of view 100 times wider than the Hubble Space Telescope's infrared camera, Roman is expected to transform our understanding of cosmic structure and evolution.

The final two satellites of ESA's pioneering Cluster mission — nicknamed Samba and Tango — are set to perform targeted reentries into Earth's atmosphere on 31 August and 1 September respectively. The controlled disposals mark the conclusion of a mission that revolutionised understanding of Earth's magnetic environment and the solar wind's interaction with it. Scientists plan to observe the breakup from an aircraft, turning the reentries into a rare opportunity to study how spacecraft fragment and burn up — data valuable for improving space-debris mitigation models.

Shenzhou-23 crew members Zhu Yangzhu and Zhang Zhiyuan conducted the mission's first extravehicular activity (EVA) outside China's Tiangong space station to perform maintenance ensuring a stable power supply for ongoing experiments aboard the orbital complex. Separately, a gravity experiment using free-falling rubidium atoms aboard Tiangong has confirmed that the atoms fell with identical acceleration, upholding the equivalence principle — a cornerstone of Einstein's general theory of relativity — in a new high-precision test conducted in microgravity.