It used to be a planet and then it wasn’t. Pluto’s demotion has been a bone of contention amongst many, since it was relegated from the status of planet to dwarf planet. This fight has overshadowed a milestone in human space travel. We have actually sent a spacecraft that has flown by Pluto, has made scientific observations and sent back images that have changed our understanding of this solar system object.

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Title music: Hovering Thoughts by Spence (YouTube Music Archive)