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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Sunday morning, September 28, 1969, a fireball lit up the skies north of Melbourne, Australia.

And people were getting ready to go to church and then they heard this loud sonic boom.

Some of them saw the bright fireball and broad daylight, and people were surprised.

There was what's going on, especially those who were not outside. They realized, is there an airplane

that came down? It sounded really dramatic. And then suddenly, shortly after that, there was a

smell that was detectable over the whole area. People describe it as metalated spirits, so strong organic

smell.

Cosmochemist Philip Heck of Chicago's Field Museum, describing the spectacular arrival of what's

now known as the Murchison Meteorite, named for the village where it was found.

A portion of the space debris now resides at the Field Museum, and Heck says it's our best source of

pre-solar stardust, meaning stardust older than the solar system and the sun itself.

I called it a scientific treasure trove. Inside the meteorite is dusty debris, left over from when

stars slightly larger than our sun, fizzled out. Over millions of years, those dust grains were

battered by cosmic rays, which slightly altered their composition. Adams of elements got broken

down into smaller ones, like neon and helium, and then some of that stardust was swallowed up

within rocks, such as the Murchison meteorite, during the formation of our solar system. Those rocks

...