Astrophysicist Jonathan McDowell told Newsweek there were changes in Cosmos 2553's orbit amid speculation about the satellite ...

Secretive Russian satellite appears to be spinning out of control - Cosmos 2553 is linked to Russia’s nuclear weapons program ...

A Russian military satellite, Cosmos 2553, believed by US officials to be linked to Moscow's nuclear anti-satellite weapons ...

Cosmos 2553, a Russian satellite linked to space weapon development, appears to have malfunctioned after months of erratic ...

Cosmos 2553 is one of dozens of Russian satellites with suspected ties to its military and intelligence programs.

Newsweek has contacted the White House for comment.