Carl Sagan on the chemical elements

Carl Sagan discusses atoms; he explains how they are fused together in the interiors of stars. "Where do the natural occuring chemical elements come from? Perhaps a seperate creation for each element? But all the elements are made of the same elementary particles; the Universe all of it, everywhere, is 99.9 percent hydrogen and helium." This video comes from Carl Sagan's Cosmos episode 9, "The Lives of Stars."

Category:

Science & Technology

Tags:

• Carl
• Sagan
• Cosmos
• Universe
• Stars
• Earth
• Space
• Astronomy
• Science
• Atoms
• Chemistry
• Physics
• Math
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[Hamsammich111]

IN THE INSIDES OF WHAT?!

[xXCirmsonRagexX]

@Zee96969696 Thank god as you watch Carl Sagan lol. now that's funny

[87TheProdigy87]

he explains that there are an equal number of electrons as protons in every atom for example in hydrogen there is 1 proton so there must be one electron, but how do you determine how many neutrons are in each element? is there a way of telling how many neutrons are in an atom by knowing how many protons/electrons there are?

[walmartpimp2]

I bump into raziodynum all the time, there's some at the local Walmart.

[leokimvideo]

I wish Mr Sagan was my Chemistry teacher, I may have become something in life as he explains it all so well

[LoungeFly02]

@Shadow194 Giant stars fuse elements from H (Helium) up to Fe (Iron) during the end of their life. Once the iron has fused, no other heavier element may be fused and so, depending on the chandrasekhar limit the star will explode and become either a neutron star or black hole. Once the star goes supernova, only then are temeperatures hot enough to allow further, heavier elements to begin fusion including lead.

[Shadow194]

@LoungeFly02 Btw he says Lead, not iron :p

[MartinGianola]

he was the best

[Bomberdoom]

correct word is detect no? or can we actually see them?

[atomicwave]

It's funny to hear him talk about this stuff and never mentions quarks.