Age of Stars Determines Frequency of Hot Jupiters

A study published in Proceedings of the National Academy of Sciences has found a correlation between the age of star systems and the frequency of hot Jupiters, large exoplanets that orbit close to their stars. The research team analyzed data for 383 Jupiter-sized exoplanets and found that hot Jupiters were more likely to be found around younger stars, with the frequency decreasing as star systems aged. The study also revealed that the frequency of hot Jupiters was related to the amount of metal in the host star, providing insights into the discrepancies between different exoplanet surveys.