Watch NASA launch a spacecraft to explore ancient asteroids that lead and trail Jupiter around the sun

An illustration showing the Lucy spacecraft passing one of the Trojan Asteroids near Jupiter.
Southwest Research Institute
On Saturday, NASA launches its Lucy probe to the Trojan asteroids that orbit the sun with Jupiter.The Trojans are like fossils, unchanged since the solar system was born 4.6 billion years ago.
Lucy aims to visit eight different asteroids - a record number of encounters.
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NASA is about to launch an ambitious mission to explore swar