An ancient, terrifying ‘warning’ may have created Pluto’s heart
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific advancements and more. The massive heart-shaped feature on Pluto’s surface has intrigued astronomers since NASA’s New Horizons spacecraft photographed it in 2015. Now researchers think they’ve solved the mystery of how the distinctive heart came to be, and… Read More »