The search for Planet 9
@AntonyTheReal_ showed me a video recently, in which one of the folks was rather upset with NASA. It bothered him that they were presenting details of a planet orbiting another star, lightyears away, while at the same time, we’re still not certain whether or not there is a ninth planet within our own solar system. Today, we talk about the possible ninth planet—why it’s thought that there is one, and why the search for it is taking so very long.
Here’s an article put out back in 2016, describing the reasons for searching for Planet 9.