Skywatch: Mauna Kea observatories discover rare companions

Astronomers using the Subaru Telescope and W.M. Keck Observatory on Mauna Kea have discovered a massive planet and a brown dwarf orbiting distant stars — two rare companions that deepen our understanding of how giant planets and substellar objects form and evolve. These discoveries are the first results from the Observing Accelerators with SCExAO Imaging Survey program. OASIS is a new large-scale survey that combines precision stellar motion data from space-based missions with the cutting-edge imaging capabilities of Mauna Kea’s observatories.

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