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Astronomers found a mysterious object beyond Neptune, and it could be a new dwarf planet

Astronomers using the Rubin Observatory have discovered a candidate dwarf planet named 2026 ED138 located in the outer reaches of the solar system beyond the orbit of Pluto. If the classification is confirmed, this object would become the sixth recognized dwarf planet in the solar system. The object remained undetected for nearly a decade before its recent identification. Researchers are currently investigating the exact size and nature of the world to determine if it meets the criteria for dwarf planet status.

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⚡ Key Developments & Real-Time Context
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  • ✓ The Rubin Observatory discovered a candidate dwarf planet named 2026 ED138.
  • ✓ The object is located beyond the orbit of Pluto.
  • ✓ If confirmed, 2026 ED138 would be the sixth recognized dwarf planet in the solar system.
🛡️ Source Corroboration: 12 independent reporting domains (90% confidence) ⏱ Read time: ~2 min

What changed

The object has been identified by name as 2026 ED138 and linked to the Rubin Observatory.

Live updates

  1. Rubin Observatory identifies potential dwarf planet 2026 ED138 beyond Pluto

    Astronomers using the Rubin Observatory have discovered a candidate dwarf planet named 2026 ED138 located in the outer reaches of the solar system beyond the orbit of Pluto. If the classification is confirmed, this object would become the sixth recognized dwarf planet in the solar system. The object remained undetected for nearly a decade before its recent identification. Researchers are currently investigating the exact size and nature of the world to determine if it meets the criteria for dwarf planet status.

    Why it matters

    The discovery expands the known map of the solar system's furthest regions beyond Neptune. Identifying new dwarf planets helps scientists understand the formation and evolution of the outer planetary disk.

    What is confirmed

    • The Rubin Observatory discovered a candidate dwarf planet named 2026 ED138.
    • The object is located beyond the orbit of Pluto.
    • If confirmed, 2026 ED138 would be the sixth recognized dwarf planet in the solar system.

    Still unconfirmed

    • The object measures up to 1,500 km across.
    • The object is among the largest worlds ever found past Neptune.

    What to watch next

    • Confirmation of the object's official classification as a dwarf planet
    • Final determination of the object's physical dimensions and mass
    Sources used for this update (13)
    1. www.sciencedaily.com — Space & Time News -- ScienceDaily
    2. earthsky.org — New dwarf planet discovered by Rubin? - EarthSky
    3. National Geographic — Astronomers Just Discovered a New Hidden World Beyond Neptune
    4. Reuters — Possible new dwarf planet identified orbiting beyond Pluto
    5. Space — Astronomers found a mysterious object beyond Neptune, and it could be a new dwarf planet
    6. Sky & Telescope — Possible New Dwarf Planet in the Solar System
    7. KING5.com — Rubin Observatory team finds possible new dwarf planet; November sky brings supermoon, Leonids
    8. www.hindustantimes.com — Astronomers discover possible new dwarf planet beyond Pluto ...
    9. www.skyatnightmagazine.com — Scientists have found an enormous new dwarf planet beyond ...
    10. www.sciencedaily.com — Jupiter News
    11. www.astronomy.com — Rubin spots possible dwarf planet - Astronomy Magazine
    12. tech.yahoo.com — A New Dwarf Planet May Be Hiding Beyond Neptune
    confidence 90%
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