ALMA observations of the dusty protoplanetary disc surrounding a star known as HD 107146 provides evidence for an entire family of orbiting Pluto-size objects, a solar system in transition from early life to maturity where planets have finished forming.
A new image from ALMA, the Atacama Large Millimeter/submillimeter Array, reveals extraordinarily fine detail that has never been seen before in the planet-forming disc around a young star.