50 years ago, scientists had hints of a planet beyond Pluto

Cometary evidence of a planet beyond Pluto Science News, May 6, 1972

There have been suggestions that our solar system might have a tenth planet…. In the April Publications of the Astronomical Society of the Pacific, a mathematician … presents what he says is “some very interesting evidence of a planet beyond Pluto.” The evidence comes from calculations of the orbit of Halley’s comet.

Update

The 1972 evidence never yielded a planet, but astronomers haven’t stopped looking — though it became a search for Planet 9 with Pluto’s 2006 switch to dwarf status. In the mid-2010s, scientists hypothesized that the tug of a large planet 500 to 600

→ Continue reading at Science News

More from author

Related posts

Advertisment

Latest posts

Prioritize Cybersecurity as Your Organization Taps the Cloud

Opinions expressed by Entrepreneur contributors are their own. Companies are spending record amounts on innovation with large investments being made in cloud-related...

Wall Street is fed up with Under Armour, Nike and Adidas

New York CNN Business  —  Tripped-up supply chains and a coronavirus surge in China are causing headaches for top...

5 Strategies to Writing a Book That Will Build Authority

Opinions expressed by Entrepreneur contributors are their own. There are many ways to build your authority, including writing books, giving speeches, hosting...