Astronomers Discover a Dying Exoplanet Disintegrating Near Its Star

Astronomers have detected a small, rocky exoplanet disintegrating as it orbits dangerously close to its star. The planet, estimated to be between the size of Mercury and Earth’s Moon, is losing material due to high temperatures, leaving behind a comet-like tail stretching 9 million kilometers. Since the 1990s, approximately 5,800 exoplanets have been discovered outside our solar system, but only four have been observed disintegrating in orbit. This particular planet, BD+05 4868 Ab, located in the Pegasus constellation about 140 light-years from Earth, offers scientists a unique opportunity to study these doomed worlds. Orbiting its star every 30.5 hours at a distance 20 times closer than Mercury’s proximity to the Sun, the surface temperature reaches around 1,600 degrees Celsius, turning its rocky exterior into molten magma. Researchers believe the planet will completely disintegrate within the next million years. Using NASA’s TESS telescope, they aim to further analyze the composition of the debris trail with the James Webb Space Telescope.