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Curated category

Population I stars

  • RigelRigel shines as a blue supergiant in the equatorial constellation of Orion. Astronomers classify this star with the spectral type B8Ia.
  • SunThe Sun formed about 4.6 billion years ago from the collapse of part of a giant molecular cloud that consisted mostly of hydrogen and helium.
  • Alpha CentauriThe Alpha Centauri system holds three stars in a single gravitational family. Rigil Kentaurus and Toliman form a binary pair that appears as one bright point…
  • TRAPPIST-1Astronomer John Gizis published the first detection of TRAPPIST-1 in 2000, though observations from June 1999 had already captured its light.