Spaceflight Insider

News Archive / Tagged: X-rays

  • Chandra Observatory may have discovered extra-galactic planet

    Laurel KornfeldNovember 6th, 2021

    Scientists using NASA's Chandra X-ray Observatory may have found evidence for the first-ever known extra-galactic planet, located 28 million light years away in the Whirlpool Galaxy, also known as Messier 51 (M51).