Astronomers have discovered a Jupiter-size planet, WD 1856 b, orbiting a dead white dwarf star. This finding could provide insights into the potential fate of our solar system’s largest planets when the sun dies in 5 billion years.
Understanding the Exoplanet’s Survival
The exoplanet, located 80 light-years from Earth, is seven times larger than its host star and completes one orbit every 34 hours. Researchers used the James Webb Space Telescope to study the planet’s atmosphere, mass, and temperature, revealing unexpected findings.
The team’s data suggests that the planet originally orbited the star from a safer distance but migrated inward after the star died. Two competing theories, the ‘engulfment model’ and the ‘gravitational interaction model,’ attempt to explain how the planet ended up in its current tight orbit.
The discovery of WD 1856 b’s atmosphere, including the presence of methane, provides valuable information about the planet’s history and potential future. As the sun transitions into a white dwarf, the planets in our solar system will continue to orbit the dead star, offering a glimpse into the possible fate of our celestial neighborhood.
Original reporting: KTVZ (Central Oregon) — read the source article.
