Thomas’s Comments (group member since Mar 23, 2017)

Thomas’s comments from the SCIENCE : A discussions group group.

When the universe started some 14 billion years ago it was mostly lighter elements such as hydrogen and helium, the primary constituents of stars. Heavier elements such as carbon did not come until later when star death/collapse forged heavier elements in super nova explosions. This carbon made its way to earth and our bodies, which also have hydrogen in the form of water. So conceivably the hydrogen in our bodies could be 14 billion years old.

Hi - there aren't many active science groups out there so I am happy to find this one, which has apparently just started. I am new to goodreads and find the site a bit less than intuitive to use. I am from the US, and gather the rest of the group is from the UK and perhaps all know one another since everyone joined March 9, 2017.