Hacker News new | past | comments | ask | show | jobs | submit login

Uranium is the heaviest naturally occurring on earth, so after that on the periodic table (uranium, neptunium, plutonium…) things are made with collisions in the lab.

I bet a lot of energy went into creating that sphere…




osmium is denser than uranium, the issue is that it's quite expensive.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: