Former President Donald Trump has long advocated for Pluto’s reclassification as a full planet, a stance that dates back to 2019 when his appointed NASA administrator first raised the issue. Pluto lost its planetary status in 2006 after the International Astronomical Union (IAU) established a new system for classifying celestial bodies orbiting the sun. Once considered the ninth planet in our solar system and a staple of childhood mnemonics, Pluto was demoted to a "dwarf planet."

Now, Trump is reviving the debate, reportedly pushing for Pluto’s reinstatement via executive order. However, such a move would be legally and scientifically invalid. This week, NASA Administrator Jared Isaacman testified before a Senate committee, stating,

"I am very much in the camp of 'make Pluto a planet again.'"
Yet, as Isaacman acknowledged, only the IAU has the authority to redefine planetary status.

Isaacman’s comments appear to be a strategic maneuver rather than a genuine advocacy effort. He hinted at leveraging ongoing NASA research to "escalate through the scientific community to revisit this discussion." Critics suggest his remarks may be an attempt to curry favor with Trump to secure additional funding for NASA’s missions.

Source: Defector