Stardust Buried in Antarctic Ice Exposes an 80,000-Year-Old Cosmic Mystery

Antarctic ice preserves traces of iron-60 from ancient stellar explosions, helping scientists track the Solar System’s movement through interstellar clouds and changing cosmic environments. When you think of outer space, you’re likely picturing stars, planets, and moons. But much of space is filled with clouds of gas, plasma, and stardust—known as interstellar clouds. In the [...]