A Three-Planet Extrasolar System

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Using the ultra-precise HARPS spectro-graph on ESO's 3.6-m telescope at La Silla, a team of astronomers1 has discovered that a nearby star is host to three Neptune-mass planets. The in-nermost planet is most probably rocky, while the outermost is the first known Neptune-mass planet to reside in the habitable zone. This unique system is likely further enriched by an asteroid belt.

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