Astronomers Discover Earth-like Exoplanet Orbiting White Dwarf Offering Glimpse into Solar System’s Future
In a remarkable discovery, astronomers have identified an Earth-like exoplanet orbiting a white dwarf star, potentially providing insight into the distant future of our own solar system. The exoplanet, with a mass approximately 1.9 times that of Earth, survived the violent phase when its host star expanded into a red giant before shrinking into a white dwarf. The finding offers new understanding of how planets might endure the tumultuous stages of stellar evolution.
Led by Keming Zhang from the University of California, the study utilized microlensing, a technique that magnifies distant celestial objects when the gravity of a foreground star bends the light from a background star. The white dwarf was nearly perfectly aligned with the background star, amplifying the event more than 1,000...
