Science & Tech

Speculoos-3b: A New Earth-Sized Exoplanet Discovered

  • Astronomers have discovered a new Earth-sized exoplanet, Speculoos-3b, circling an ultracool red dwarf star.

About Speculoos-3b

  • Speculoos-3b is a recently found Earth-sized exoplanet circling an ultracool dwarf star.
  • It was found by a group of astronomers led by Michael Gillon of the University of Liege in Belgium.
  • It is located around 55 light-years from Earth.
  • Because of its short orbital period, Speculoos-3b receives about 10 times more energy per second from the Sun than Earth. 

Astrophysical Significance of the Discovery

  • The prevalence of ultracool dwarfs: Ultracool dwarf stars, such as the host of Speculoos-3b, account for around 70% of all stars in our galaxy and are noted for their extended life, lasting up to 100 billion years.
  • Importance of Life’s Potential: These stars’ long lifespans create a stable environment that may permit the formation of life on orbiting planets. 

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