"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of star stuff." — Carl Sagan
I always spent my half an hour to read this blog’s content every day along with a cup of coffee. Hope Way Thanks
I always spent my half an hour to read this blog’s content every day along with a cup of coffee. Hope Way Thanks
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