The Telescope Array Project studies the properties of ultra high energy cosmic rays by measuring
the extensive air showers which they induce when interacting in the Earth's atmosphere. We
do this using a variety of techniques including using an array of scintillator detectors to sample
the footprint of the air shower when it reaches the Earth’s surface and telescopes to measure the
fluorescence and Čerenkov light of the air shower. From this we determine the energy spectrum
and chemical composition of the primary particles. We also search for sources of cosmic rays and
anisotropy. One of the interesting things which we have found is evidence of a possible source of
ultra high energy cosmic rays in the northern sky. The experiment and its recent measurements
are discussed.