NASA's James Webb Space Telescope has unveiled a breathtaking image of an aging binary star system, Apep, located around 8,000 light-years from Earth, shrouded in four swirling layers of cosmic dust. The newly captured mid-infrared snapshot reveals that the system was initially observed to have only one shell, but further examination has confirmed the presence of four shells, each composed of dense carbon dust emitted by the two Wolf-Rayet stars over the past 700 years.
The two massive stars, Apep's Wolf-Rayets, are nearing the end of their lives and are extremely rare in our galaxy. Scientists believe there may be only a thousand such stars in existence. Researchers from Caltech and Macquarie University in Sydney have combined measurements from the Webb telescope with decades-old data to reveal that these two supergiants "swing by each other" every 190 years, causing their stellar winds to collide and expel copious amounts of carbon-rich dust.
The latest discovery also confirms the presence of a third star gravitationally bound to the Wolf-Rayets. This massive supergiant is approximately 40-50 times larger than our sun and has carved a funnel-shaped cavity within the shells, visible in the image. The three stars are thought to have undergone significant mass shedding over time, with each reduced from their original size.
As Apep's Wolf-Rayet stars continue on their path, they will eventually explode into supernovae and potentially transform into black holes. This dramatic transformation offers a unique opportunity for scientists to study the final stages of these celestial behemoths and shed light on the mysteries of star evolution.
The two massive stars, Apep's Wolf-Rayets, are nearing the end of their lives and are extremely rare in our galaxy. Scientists believe there may be only a thousand such stars in existence. Researchers from Caltech and Macquarie University in Sydney have combined measurements from the Webb telescope with decades-old data to reveal that these two supergiants "swing by each other" every 190 years, causing their stellar winds to collide and expel copious amounts of carbon-rich dust.
The latest discovery also confirms the presence of a third star gravitationally bound to the Wolf-Rayets. This massive supergiant is approximately 40-50 times larger than our sun and has carved a funnel-shaped cavity within the shells, visible in the image. The three stars are thought to have undergone significant mass shedding over time, with each reduced from their original size.
As Apep's Wolf-Rayet stars continue on their path, they will eventually explode into supernovae and potentially transform into black holes. This dramatic transformation offers a unique opportunity for scientists to study the final stages of these celestial behemoths and shed light on the mysteries of star evolution.