Zombie Star’s Mysterious Spiky Filaments Baffle Astronomers in New Discovery

A strange and ancient supernova remnant, located roughly 6,500 light-years away from Earth, has been puzzling scientists. The remnant, known as Pa 30, surrounds a zombie star cloaked in sulfur filaments stretching across three light-years. Skywatchers first documented the explosion in 1181, but its spiky filaments and structure have only recently been studied in detail. The unusual formation and preservation of these filaments over centuries remain unexplained, prompting astronomers to investigate their origins and dynamics.

New Observations of Pa 30 Nebula

According to a study published in Astrophysical Journal Letters, the 3-D structure and motion of the nebula's filaments were mapped using observations from the W.M. Keck Observatory in Hawaii. The research, led by Tim Cunningham, an astronomer at the Harvard & Smithsonian Center for Astrophysics, revealed a unique three-layered structure. A central star is surrounded by a one-to-two light-year gap, followed by a spherical dust shell. Extending outward from this shell are the enigmatic filaments, creating the nebula's spiky appearance.

As reported by Science News Explores, the explosion, believed to be a type 1a supernova, is typically associated with the complete destruction of a white dwarf star. In this instance, part of the star survived, raising further questions about the event's nature.

Theories on Formation of Filaments

The precise mechanism behind the formation of the filaments has yet to be determined. It was suggested by scientists that a shock wave from the explosion might have interacted with the surrounding interstellar material, bouncing back and sculpting the spikes. The uniformity and persistence of these filaments over hundreds of years add to the mystery.

Future studies will focus on testing these theories and gathering more data to clarify the processes that led to the creation and stability of this unique nebula structure. Astronomers continue to examine Pa 30 in the hope of uncovering more details about its peculiar features.