teaching you things about space on Instagram: "This is the TRUE size of Stephenson 2-18 — the largest known star — compared to Earth. If it replaced our Sun, its surface would stretch far beyond the orbits of Mars and Jupiter, completely swallowing the inner solar system.” What makes it so massive is its extreme radius and low density, meaning it’s huge in size but not solid like a planet. Supergiant scale + stellar expansion = unimaginable size difference. Mind-blowing fact: Light would take ho