Smithsonian Magazine

Could Pluto Once Again Be Considered a Planet? New Remarks From NASA’s Administrator Highlight an Enduring Debate Among Scientists

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

Quit Whining. Pluto’s Not A Planet — An Astrophysicist Explains

The head of NASA says maybe Pluto is a planet after all. He is wrong because Pluto is part of the rest of the solar system ...
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Our solar system could soon have a ninth planet - and no, it's not Pluto

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar system has eight planets but in recent years, astronomers have theorised ...
Tennessean

'Make Pluto a planet again,' NASA chief says at US senate hearing

NASA Administrator Jared Isaacman has reiterated his support for Pluto to be reclassified as a planet. Pluto was downgraded ...
BGR

Is There Actually A Ninth Planet In Our Solar System? Here's What We Know

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

Should Pluto be considered a planet? Why NASA chief says yes

NASA chief Jared Isaacman said at a US Senate hearing that he supports restoring Pluto's status as a planet after a ...
insider.si.edu

Pluto : sentinel of the outer solar system / Barrie W. Jones

"Orbiting at the edge of the outer Solar System, Pluto is an intriguing object in astronomy. Since the fascinating events surrounding its discovery, it has helped increase our understanding of the ...