This photo harks back to 2017, when Trump signed a space policy directive: return to Moon, etc

https://www.nbcnews.com/mach/science/trump-directs-nasa-return-moon-aiming-mars-ncna828721

The elongated glass dome on the desk, seemingly half full of water

What is the message ?

It looks entirely out of place

Domed Flat Earth ?….water, as above, so below ?