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We haven’t seen a rock like this in 50 years.

In late April, the residents of Aguas Zarcas saw a giant fireball light up the sky as it hurtled towards the ground and broke up into hundreds of pieces, like this one above, in the atmosphere.
Photo courtesy of Michael Farmer and Arizona State University
▼ Space science is always about what’s going on ‘out there’. Sometimes, astronomers must pay attention to what’s falling to Earth, too. That’s precisely what Arizona State University’s (ASU) Laurence Garvie is ready to do as he and his team scrutinize an extraterrestrial mud ball that rained down from the heavens last month and landed in a small town in Costa Rica. That’s not a euphemism: We’re talking about a literal mud ball.
In late April, the residents of Aguas Zarcas saw a giant fireball light up the sky as it hurtled towards the ground and broke up into hundreds of pieces in the atmosphere. Within minutes of the fall, local news media reported pieces were falling through the roof of a house at hundreds of miles per hour, destroying a dining room table. “It really arrived with a big bang,” says Garvie.
Early reports showed this meteorite to be a carbonaceous chondrite—which are non-metallic rocks that formed 4.5 billion years ago, back when the solar system was a mere crabby infant. (▪ ▪ ▪)
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