Fluffy 'Cat's Tail' Seen 63 Light-Years From Earth Hints at High-Speed Space Rock Collision
Learn about a faraway cosmic feature that looks like a cat's tail made of "fluffy" dust grains that may have scattered after a space rock collision.
A team of astronomers has discovered a cosmic feature resembling a cat's tail made of fluffy dust grains, located 63 light-years away from Earth. This tail spans over 1,000 astronomical units (au) and is situated in the debris disk of the Beta Pictoris system, a young star system believed to be in the final stages of planet formation. The cat's tail, first observed in infrared light by the James Webb Space Telescope, was only recently visible in visible light due to its high carbon content, which absorbs the light.
The discovery, reported in The Astrophysical Journal Letters, was made possible by combining Hubble Space Telescope data with infrared observations from the JWST. Researchers from the University of Arizona found that the fluffy dust grains comprising the tail likely formed as a result of high-velocity collisions between Pluto-sized bodies, vaporizing the carbon grains and causing them to recondense as they cooled. This phenomenon may provide insight into the early stages of our own solar system's formation.
The team also noted that the tail may be oriented horizontally relative to Earth, lying in the same plane as the star and a planet within the system, Beta Pictoris b. This positioning, along with the tail's vast length, offers a unique opportunity to study the processes occurring in our solar system's early years.
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