BLITS (Ball Lens In The Space) is a Russian satellite launched on September 17, 2009, as a secondary payload on a Soyuz-2.1b/Fregat, from the Baikonur Cosmodrome in Kazakhstan.

As the satellite is made of glass, minimal in-flight spin slowdown was expected since there were no conducting parts where currents interacting with the Earth magnetic field can be induced.

[8] The change was traced back to an event that occurred 22 Jan 2013 at 07:57 UTC; data from the United States's Space Surveillance Network showed that within 10 seconds of that time BLITS was close to the predicted path of a fragment of the former Chinese Fengyun-1C satellite, with a relative velocity of 9.6 km/s (6.0 mi/s) between them.

On April 19, 2013, BLITS mission contacts from the Scientific Research Institute for Precision Instrument Engineering in Moscow asked the ILRS to end tracking on the satellite,[10] because its laser reflector cross section has significantly decreased after the collision, preventing its further use.

[11] According to the simulation by the Center for Space Standards & Innovation (CSSI), a research arm of Analytical Graphics, Inc. (AGI), BLITS could have been hit by a piece of debris originated by the 2007 Chinese anti-satellite missile test.