The James Webb Space Telescope (JWST) has once again expanded the horizons of astronomy with a remarkable image of Apep, a rare Wolf-Rayet star system named after the Egyptian god of chaos. Wolf-Rayet stars are massive, extremely hot stars nearing the end of their lives, shedding mass at incredible speeds through powerful stellar winds.
For the first time, Webb’s advanced instruments have revealed multiple coiled shells of dust surrounding the binary pair of Wolf-Rayet stars. Earlier telescopes had only detected a single shell, but Webb’s infrared sensitivity uncovered four distinct spirals, each formed over centuries of stellar activity.
Adding to the intrigue, Webb confirmed the presence of a third star bound to the system. This massive supergiant interacts with the dust shells, slicing through them and leaving visible “holes” in the cosmic spirals. NASA explains that these cuts can be traced in the image by following a V-shaped pattern across the central point of light.
Speed and Scale of the Dust Clouds
Despite their serene appearance, the dust clouds of Apep are racing through space at astonishing speeds of 1,200 to 2,000 miles per second. Over the past 700 years, the stars have continuously emitted amorphous carbon dust, creating the intricate spirals now visible.
Webb’s data, combined with observations from the European Southern Observatory’s Very Large Telescope (VLT) in Chile, confirmed that the two Wolf-Rayet stars orbit each other approximately every 190 years. During each close pass, lasting about 25 years, they generate and expel vast amounts of dust, fueling the spectacular structures captured in Webb’s latest image.
A Cosmic Dance of Chaos
The name Apep is fitting: in Egyptian mythology, Apep represented chaos and destruction, and the star system mirrors this mythological symbolism. The spiraling dust shells, carved by stellar winds and gravitational forces, embody both beauty and turbulence.
This discovery underscores the power of the James Webb Space Telescope in unveiling hidden details of the universe. By capturing phenomena invisible to previous generations of telescopes, Webb continues to reshape our understanding of stellar life cycles and cosmic evolution.
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This article is based on reporting from Colossal.
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