In any context, a very useful skill to learn is estimation. Most job interviews typically incorporate some form of case study, where the candidate is called upon to work their way through a problem, making basic estimates and assumptions along the way. Aside from being able to logically reason through the problem, I’ve found the second most important aspect of making a good estimation is some basic knowledge with which to frame the problem.
In the case of planets, solar systems, and our universe, it’s frequently quite difficult to understand the scale of celestial bodies/forces/energies, and how they relate to one another. The result of this fuzziness (and that the numbers are so big!) is that it’s very easy to be off by several orders of magnitude. Aside from being visually stunning (and humbling as a human being, this video does an amazing job of conveying the relative masses of several planets and stars in our universe. Another exercise you might find interesting for a minute or two is comparing the sizes of planets to eachother, just to have a slightly better understanding of how planets relate to one another.