News Archive / Tagged: planets
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Study makes case for geophysical planet definition
Laurel KornfeldJanuary 16th, 2022In an in-depth study of planet classification from the time of Galileo to the present, a group of planetary scientists criticize the 2006 International Astronomical Union planet definition as being rooted in folklore and astrology and argue for a geophysical definition that includes spherical moons as secondary or satellite planets.
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Chandra Observatory may have discovered extra-galactic planet
Laurel KornfeldNovember 6th, 2021Scientists 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).
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New study rejects IAU rationale for demoting Pluto
Laurel KornfeldSeptember 13th, 2018Is Pluto a planet? A new study questions the controversial decision that was handed down by the International Astronomical Union.