This intense activity also corresponds to the presence of areas in which the matter is rarefied, which were probably formed following a combination of stellar winds and supernovae explosions.

[4] The galaxy has an elongated and flattened "pancake"[8] shape, with a maximum diameter that extends for approximately 2,700 light years.

[2] Kiso 5639 was discovered in 2004 using the Hubble Space Telescope, and was further observed in February and July of 2015 with the Wide Field Camera 3.

[2] Faint areas of star formation are present in other parts of the galaxy, with stellar elements ranging in age from several million to a few billion years.

[9] The starburst is believed to have begun approximately one million years ago following the galaxy's encounter with a filament of intergalactic gas.