Smallest Planet Continues to Shrink

Live updates

1. 2d ago

   Mercury Is Shrinking Faster Than Expected

   Scientists report that Mercury, the smallest planet in the solar system, is continuing to shrink at a rate exceeding previous scientific expectations. Researchers are actively working to determine if the planet is even smaller than previously calculated. Multiple news organizations and scientific outlets have highlighted these ongoing investigations into the planetary contraction. The findings prompt renewed analysis of the geological forces shaping the smallest terrestrial world.

   Why it matters

   Observers track the physical contraction of planetary bodies to understand the thermal evolution of rocky planets. Mercury possesses a unique geological history defined by cooling and global shrinkage. Researchers continue to examine data to refine measurements of the planetary radius.

   What is confirmed

   • Mercury is the smallest planet in the solar system.
   • Mercury is shrinking at a rate faster than scientists previously expected.

   Still unconfirmed

   • Mercury might be even smaller than current scientific models expect.

   What to watch next

   • Publication of updated planetary radius calculations
   • Further scientific announcements regarding Mercury contraction rates
   Sources used for this update (6)

   1. The New York Times — Mercury Is Shrinking, and Faster Than We Thought
   2. Time Magazine — The Planet Mercury Has Been Shrinking—More Than Scientists Expected
   3. CNN — Scientists are trying to figure out if Mercury is even smaller than expected
   4. AGU Newsroom — Mercury is shrinking more than we thought
   5. Newser — Smallest Planet Continues to Shrink
   6. nbcnews.com — Mercury may be shrinking faster than scientists expected
   confidence 100%