A Massive-Core Hot Planet is Discovered
A collaboration of astronomers from Japan, USA, and Chile have discovered an unusual extra-solar planet whose properties favors a formation process of gaseous planets to start from a solid core and accumulate gaseous material.
However its excessive weight created another mystery to solve. The Subaru and Keck telescopes on Mauna Kea, Hawaii, contributed to this discovery.
More info: Subaru telescope web page