Scientists have long been puzzled how chondrules could have formed. These are tiny, millimetre-sized spheres that make up primitive meteorites, and were somehow baked 4.6 billion years ago. New calculations show that the as giant planets, like Jupiter, formed in the early Solar System, they created regions of higher pressure and radiation called "shocks". As tiny particles entered these shocks at more than 30,000 kph, they were melted together to form these tiny chondrule droplets.
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