Today in 1975, the journal "Physical Review Letters" published a physics paper co-authored by a house cat. Physicist Jack Hetherington's co-author, F.D.C. Willard, was actually his cat, Chester. When the secret came out, Michigan State invited Chester to join the physics faculty full-time. Swipe to see Chester's signature. 🐱🐾 . . . . . . . . . #cat #catsofinstagram #science #physics #pets #petsofinstagram #smart #author #cats #animals #intellectual #sciencehistory #history #otd #onthisday #funny