[labster]

I think they were referring to metals like carbon and oxygen, but I’m sure Led Zeppelin is important too.

[1-more]

Carbon and Oxygen are not metals though, right?

[hollerith]

According to the definition used by astronomers, all elements heavier than hydrogen and helium are metals.

[GuB-42]

A good reason for recycling centers to hate astronomers.

[1-more]

fascinating!!