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Youngest Planet Found: Rewriting Cosmic Birth Stories
6 Oct
Summary
- Elias 2-24b is the youngest exoplanet discovered, under one million years old.
- Its rapid formation challenges core accretion theories for giant planets.
- Located 450 light-years away, it orbits a star less than one million years old.
A groundbreaking discovery has revealed Elias 2-24b, the youngest exoplanet detected to date, estimated to be less than one million years old. This celestial body is located approximately 450 light-years from Earth and orbits its host star at a considerable distance.
Scientists observed significant gaps within the protoplanetary disk surrounding the star Elias 2-24. By reanalyzing coronagraph data, they identified a bright spot within one such gap, confirming it as a gravitationally bound planet. This discovery is particularly significant because Elias 2-24b is vastly younger than previously confirmed exoplanets, which were typically over five million years old.
The formation of Elias 2-24b challenges conventional planet formation models like the core accretion theory. This theory suggests that giant planets take millions of years to form. However, Elias 2-24b appears to have rapidly developed into a giant planet in a fraction of the estimated time, suggesting that current models may be missing crucial formation processes.
Future observations, particularly with NASA's Nancy Grace Roman Space Telescope, are expected to detect more young planets. This advanced technology promises to further our understanding of planetary formation by providing unprecedented views of these early cosmic stages.
