Solar Systems in the Making in Great Detail

The discoveries, published in the Astrophysical Journal, provide a better understanding of the way hydrogen gas from the protoplanetary disk is incorporated into the star.

By coupling both Keck telescopes on Mauna Kea in Hawaii with a specifically engineered instrument named ASTRA (ASTrometric and phase-Referenced Astronomy), Eisner and his colleagues were able to peer deeply into protoplanetary disks -- swirling clouds of gas and dust that feed the growing star in its center and eventually coalesce into planets and asteroids to form a solar system.

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