T Pyxidis (T Pyx) is a recurrent nova within the Milky Way
which has erupted three times in the last hundred years, in 1944,
1967, and 2011, the latter which resulted in considerable observation
and research.
It is a binary star that includes a white dwarf and is considered
a potential progenitor for a Type Ia supernova.
Other such Milky-Way recurrent novae include T Coronae Borealis (T CrB) which erupted
in 1866 and 1946, and IM Normae (IM Nor) which erupted in 1920
and 2002.