Recent Progress of the Telescope Array Experiment

The Telescope Array (TA) experiment has been observing ultra-high-energy cosmic rays (UHECRs) using a surface detector (SD) array and fluorescence detector (FD) stations since 2008. TA is the largest UHECR observatory in the Northern Hemisphere. It has been expanded by constructing additional SDs and FDs to extend its energy coverage toward both lower and higher energies. These extensions are called the TA Low Energy Extension (TALE) and the TAx4 experiment, respectively. Together, they allow us to observe cosmic rays over more than five orders of magnitude in energy above $10^{15.3}$ eV. An overview of the experimental setup and the latest measurement results is presented in this paper.