Cygnus Departs ISS After Delivering 8,200 Pounds of Cargo; Astronauts Endorse Isaacman for NASA Chief; Space Force Warns of Rising Threats.

Northrop Grumman's Cygnus spacecraft, designated for its 21st commercial resupply mission to the International Space Station (ISS) for NASA, undocked on March 28, carrying over 8,200 pounds of supplies and experiments. Controlled by the Canadarm2 robotic arm, the spacecraft was released from the Unity module and is set to deorbit on March 30, burning up in Earth's atmosphere with station trash. Meanwhile, nearly 30 former NASA astronauts have endorsed Jared Isaacman as the next NASA Administrator, urging the Senate Commerce Committee to promptly schedule his confirmation hearing. The letter highlights Isaacman's experience as an entrepreneur, pilot, and commander of two space missions. In related news, U.S. Space Force General Michael Guetlein warned of escalating threats in space, citing advancements by Russia and China. He emphasized the need to bolster the Space Force's capabilities to defend U.S. satellites, as adversaries develop orbital weaponry and challenge established norms in space. Guetlein also noted the importance of commercial and international partnerships to maintain superiority.