Mathematicians crack 40-year-old problem on quasiregularly elliptic manifolds
A mathematical problem solved by Susanna Heikkilä relates to the classification of quasiregularly elliptic 4-manifolds, ...
Defense News28d
Space Force lacks ‘warfighting ethos,’ experts say
Chief of Space Operations Gen. Chance Saltzman speaks to senior leaders at Space Operations Command headquarters at Peterson Space Force Base in Colorado. (Dave Grim/U.S. Space Force) U.S ...
Space.com26d
US Space Force reveals 1st look at secretive X-37B space plane in orbit (photo)
The United States Space Force just offered a rare glimpse of its shadowy X-37B space plane in orbit. The photo, released on Thursday (Feb. 20), was taken by a camera onboard the X-37B while the ...
The Diplomat27d
China’s Space Dream: No Limits, No End
However, 2031 remains a distant milestone. Meanwhile, the China-U.S. technological rivalry intensifies, and writing by Chinese experts about space is obsessed with the United States, seeing it ...