Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. It’s an unprecedented snapshot of “time zero,

Astronomers have been thinking about how planetary systems form for a long period of time,” Ciesla said. “There’s a rich opportunity here.” NASA’s Webb Space Telescope and the European Southern Observatory in Chile teamed up to unveil these early nuggets of planetary formation around the young star known as HOPS-315.