Technology Hubble Spots Rare Ultramassive White Dwarf Born From Stellar Merger by Anika Shah - Technology February 18, 2026 by Anika Shah - Technology February 18, 2026 Hubble Telescope Detects Rare Ultramassive White Dwarf Born From Stellar Merger An international team of astronomers has discovered a rare ultramassive white dwarf star, WD 0525+526, that formed from the … 0 FacebookTwitterPinterestEmail