WASHINGTON, USA, Oct. 7, 2026 - Data from NASA's Hubble Space Telescope indicate that the white dwarf star HS 0209+0832 may host a second-generation planet.^[1] The clue is chemical: the system shows a high abundance of the element niobium, about 1,000 times the Sun's concentration, identified in archived Hubble data recorded in 1999.^[2][3] Impact Insight. A white dwarf is the dense, Earth-sized core left when a Sun-like star runs out of fuel, and material that falls onto it shows up in its light. The link to planetary defense is indirect: reading the chemistry of debris around white dwarfs is one of the few ways to learn what rocky bodies are made of around other stars.