It's Pi Day, International Mathematics Day - Last Hour. On March 14, the celebrations for Pi Greco Day reopen, dedicated to one of the most famous mathematical constants in history.
The theme chosen this year, however, is that of games: from puzzles to brain teasers, from board games to card games. NASA also joins the celebrations, which this year proposes a challenge to solve some of the problems encountered by researchers and engineers busy designing missions for the exploration of other planets and the cosmos.