The TUC detector was launched on board the Lomonosov satellite from the Vostochny Cosmodrome and put into the sun-synchronous orbit on 28 April 2016. Measurement of the spectrum, mass composition, and anisotropy of the Ultrahigh-Energy Cosmic Rays (UHECRs) with the energy E ~ 10^20 eV (1000 times higher than the LHC energy) and search for UHECR sources are among the most important tasks of high-energy astrophysics.