The universe's biggest explosions made elements we are composed of, but there's another mystery source out there - Phys.org
phys.orgSubmitted by physorg8953 in science
After its "birth" in the Big Bang, the universe consisted mainly of hydrogen and a few helium atoms. These are the lightest elements in the periodic table. More-or-less all elements heavier than helium were produced in the 13.8 billion years between the Big B…