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NASA Confirms 6,000 Exoplanets as Discovery Pace Accelerates

NASA says the surge in discoveries sets up upcoming missions to target rocky worlds for biosignature searches.

Overview

  • The tally climbed from 5,000 to 6,000 in roughly three years, nearly three decades after the first Sun-like host planet 51 Pegasi b was confirmed in 1995.
  • More than 8,000 additional candidates await confirmation, with NASA’s NExScI maintaining a continuously updated catalog that assigns no single object as the literal number 6,000.
  • The confirmed sample includes about 700 rocky planets, along with seven cataloged as of unknown type.
  • Kepler and TESS led recent detections, while ESA’s Gaia and NASA’s forthcoming Nancy Grace Roman Space Telescope are expected to add thousands more finds.
  • JWST has characterized atmospheres for over 100 exoplanets, though detecting Earth-like atmospheres will require more powerful starlight suppression technologies.