57: Ancient Stardust and Gaia Sausage

In 1969, a chunk of space rock blasted through the skies above Victoria, Australia, before making in a small, smoking crater near the town of Murchison. Keen-eyed locals grabbed as many bits of the Murchison Meteorite as they could, and it has been an object of great scientific interest ever since. Even now, 50 years later, we're still finding surprises inside — like a couple of dozen tiny grains of dust, more ancient than the entire solar system! A suggested topic from a listener (hi, mum!).