Abstract: This article presents an attitude trajectory planning algorithm for spacecraft with time-varying mass and nonconvex state constraints. As a stepping stone, the problem of constrained ...

January 29, 2026 • Tom Homan, who took over leadership of the surge in Minneapolis, says he is working on a plan to reduce the force of federal agents in the Twin Cities. January 29, 2026 • Senate ...

January 27, 2026 • Listener Shabnam Khan has a problem: Every time she works in her garden, she’s visited by lizards and frogs. Shabnam has lived in the metro Atlanta area for decades, and she says ...