Spaceflight NowWill Robinson-Smith

SpaceX to launch Italy’s Cosmo‑SkyMed Second Generation FM3 from Vandenberg in final Falcon 9 mission of 2025

By Spaceflight Now: ![](http://spaceflightnow.com/wp-content/uploads/2025/12/20251226_COSMO-SkyMed_SG_FM3.jpeg) Update Dec. 27, 2:28 p.m. EST (1928 UTC): SpaceX adjusted the T-0 liftoff time.

2025-12-27T06:00:25.663470-08:00
Universe TodayAndy Tomaswick

Kirigami-enabled Solar Sails: Using Structural Cuts to Control and Turn Sailcraft

By Universe Today: Solar sails have some major advantages over traditional propulsion methods - most notably they don’t use any propellant. But, how exactly do they turn? In traditional sailing, a ship’s captain can simply adjust the angle of the sail itself to catch the wind at a different angle.

2025-12-27T03:54:23.461136-08:00