Thursday, August 28, 2014


Throwback Thursday

N49 is a supernova remnant within the Large Magellanic Cloud, a nearby small companion galaxy to the Milky Way visible from the southern hemisphere.

Image Credit: NASA Hubble Space Telescope
NASA Identifier 440548main_STScI-2003-20a

Cosmologist Tom Abel reveals some incredible facts in his 7th Avenue Project interview with Robert Pollie about the universe and you. Considering the age of the universe is 13.8 billion years old:

1/ After the Big Bang, the atoms in a single human body likely came from a region of space at least 1 million lightyears across.  Condensed through gravity to the solar system, sun, earth and you.

2/ The Body is mostly Hydrogen. Whether it is the H2O in water, or the H in fatty acids or proteins, Hydrogen comprises 67% of the human body. This Hydrogen is 13.8 billion years old, mostly made during the Big Bang.

3/ The average age of an atom in the body is 10 billion years old.

4/ Heavier elementslike carbon, oxygen, iron and higher elementsare the result of stars super novae. The atoms in our body came from the order of magnitude of a billion stars. A billion stars' dust recondensing into our sun and solar system.

The early stars in the universe were incredibly short lived with a life spans of a few million up to 10 million years max. These stars were 30 - 300 solar masses. And so many generations and large expanses collapsed to form our Sun and solar system 5 billion years ago.

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Listen to the full podcast here:

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