H3-30 | H3-30 Test Flight
* PETREL
* STARS-X
* BRO-22
* VERTECS
* HORN-L/R From Tanegashima Space Center, Japan.
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Booster 19 Static Fire #2
SpaceX will static fire Super Heavy Booster 19, with all 33 engines installed, in preparation for Starship's 12th launch. Location: Starbase. Texas.

US EVA-95
Two astronauts will replace a high-definition camera on camera port 3, install a new navigational aid for visiting spacecraft, called a planar reflector, on the Harmony module’s forward port, and relocate an early ammonia servicer jumper — a flexible hose assembly that connects parts of a fluid system — along with other jumpers on the station’s S6 and S4 truss. Location: International Space Station.

Solar Orbiter Venus Flyby
Solar Orbiter, a partnership between ESA and NASA, will perform a gravity assist maneuver with Venus on December 24, 2026. Throughout its mission it also makes repeated gravity assist flybys of Venus to get closer to the Sun, and to change its orbital inclination, boosting it out of the ecliptic plane, to get the best – and first – views of the Sun’s poles. Location: Venus.

Hayabusa2 S-Type Asteroid (98943) Torifune Flyby
As part of its mission extension, JAXA's Hayabusa2 spacecraft will observe S-type asteroid (98943) Torifune during a high-speed fly-by. Location: (98943) Torifune.

Vega-C | Solar wind Magnetosphere Ionosphere Link Explorer (SMILE)
Launch by Avio S.p.A. Joint mission between the European Space Agency and the Chinese Academy of Sciences to investigate the interaction between Earth’s protective shield – the magnetosphere – and the supersonic solar wind. From Guiana Space Centre, French Guiana.

SNC-1 Dream Chaser Landing
The Sierra Nevada Corporation SNC-1 Dream Chaser will land autonomously at the Launch and Landing Facility of Kennedy Space Center. Location: Kennedy Space Center, FL, USA.
