The Pluto meme gained massive cultural traction following the 2006 decision by the IAU to reclassify Pluto as a dwarf planet. The internet responded with a wave of 'Justice for Pluto' sentiment, which was further revitalized in 2015 when NASA's New Horizons spacecraft sent back high-resolution images showing a distinct, heart-shaped glacier on its surface. This 'heart' became the centerpiece of countless memes, personifying Pluto as a resilient underdog that remains a planet in the hearts of the public regardless of its official scientific status. Today, these memes are widely used to represent feelings of being excluded, nostalgic defiance, or simply to appreciate the beauty of our solar system's most famous outlier.