Hubble Data Reveals Evidence of Second-Generation Planet Formation

Astronomers, using NASA Hubble Space Telescope data, have identified a distinct chemical signature around white dwarf HS 0209+0832, indicating a second-generation planet. This discovery, published in Nature Astronomy, suggests planets can form from material expelled by dying stars, offering new insights into planetary system evolution. The detection of niobium helped resolve a long-standing Hubble data mystery.