By the middle of the twentieth century we’d understood how chemical elements were made up of protons, neutrons and electrons.

The precursors of heavy elements might arise in the plasma underbellies of swollen stars or in smoldering stellar corpses.

Answer: That would be magnesium. Magnesium gets extremely hot when it reacts with oxygen in the air. Magnesium has 2 ...

‘Seeing a physical object makes it much more immediate and real and concrete rather than a picture in a book or on a website, ...