Previously, astronomers have observed giant planets, like Jupiter, forming in the giant discs around young stars. According to the ESO, this discovery shows the first minerals condensing and growing in size and mass. Eventually, this process will form planets.

CAPE CANAVERAL, Fla. (AP) — 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,” scientists reported Wednesday, when new worlds begin to gel.