File:Hubble crab nebula.jpg

Nuclear Stardust

Hubble's View of an 'interstellar cloud of stardust, hydrogen, helium and other ionized gases'

Stardust Origins

Going Supernova, Crab Nebula

After nuclear fusion, remnant clouds become stardust nebulae, seeding the universe

• http://www.greenpolicy360.net/w/Hubble

• https://en.wikipedia.org/wiki/Nebula

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Stars We Are and Older Than We Have Thought We Are

• https://www.greenpolicy360.net/w/File:Starstuff_we_are.jpg

• https://www.greenpolicy360.net/w/File:We_are_made_of_star_stuff_--_carl_sagan.jpg

• https://www.greenpolicy360.net/w/File:2001_pic3.jpeg

"Planet Citizen" --- Planet Citizens --- Planet Citizens, Planet Scientists

PlanetCitizen --- Planet Citizens --- Planet Citizens, Planet Scientists

"Atoms that comprise life on Earth

the atoms that make up the human body,

are traceable to the crucibles

that cooked light elements into heavy elements

in their core under extreme temperatures and pressures.

These stars, the high-mass ones among them,

went unstable in the later years.

They collapsed and then exploded, scattering

their enriched guts across the galaxy.

Guts made of carbon, nitrogen, oxygen.

And all the fundamental ingrediants of life itself.

These ingredients become part of gas clouds

that condense, collapse, form the next generation

of solar systems.

Stars with orbiting planets.

And those planets now have the ingrediants for life itself.

So when I look up at the night sky

and I know that, yes, we are part of this universe,

we are in this universe,

but perhaps more important than both of those facts

is that the universe is in us.

When I reflect on that fact, I look up --

Many people feel small, 'cause they're small and the universe is big,

but I feel big.

Because my atoms came from those stars."

-- Neil deGrasse Tyson

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