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Astronomers Discover Youngest Known Transiting Planet at 3 Million Years Old

The planet, TIDYE-1b, challenges existing models of planetary formation by forming much faster than previously thought possible.

  • TIDYE-1b, also known as IRAS 04125+2902 b, is only 3 million years old, making it the youngest transiting exoplanet ever observed.
  • The planet orbits an orange dwarf star about 520 light-years from Earth, completing its orbit every 8.8 days at a close distance to its host star.
  • Its discovery was made possible due to a warped and depleted protoplanetary disk, which created an unobstructed view of the planet using NASA's TESS telescope.
  • The planet's size is about 11 times Earth's diameter, with a mass between Earth and Neptune, and it is expected to evolve into a 'super-Earth' or 'mini-Neptune'.
  • This finding provides evidence that planets can form much earlier than previously believed, offering insights into the early stages of planetary and solar system formation.
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