pachrist

The cheapest PCs are ones that didn’t make the cut for Windows 11, so I’d look for 6th or 7th Gen. RAM is cheaper as well. Then you can build something cheap, and iterate from there.

For a beginner, check out Unraid. It’ll do 99% of what you want without being a hassle.

Any smartphone is the obvious one.

But, the first black hole was confirmed in 1971. The fact that we’ve taken a picture of one would be incredible, not to mention directly imaging planets in other solar systems.