Mike and Constantine track all these dim little dots to see if one of them is moving the way they'd expect Planet 9 to move. If it moves just enough maybe that's Planet 9. They do this over and over every night. As much as they can at any telescope that they can. It's going through decades of telescope astronomy surveys to find Planet 9 in that data.
Something strange is going on at the outer reaches of the solar system. One astronomer thinks it might be a Neptune-sized ninth planet, and he’s on a quest to find it.
That search is happening at an enormous telescope on the summit of Maunakea, a dormant Hawaiian volcano with a long astronomical and cultural history. But many Native Hawaiian scientists are asking: What’s lost in the pursuit of larger and larger telescopes?
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