🏝️ Dr Topaz@dr.topaz

ติดตาม

Carl Sagan points out that the nitrogen in our DNA, calcium in our teeth, iron in our blood, and carbon in our apple pies all formed inside collapsing stars. The conclusion is simple: we are made of starstuff. #CarlSagan

Milky Way over water Carl Sagan

3w

🏝️ Dr Topaz@dr.topaz

ติดตาม

Carl Sagan points out that the nitrogen in our DNA, calcium in our teeth, iron in our blood, and carbon in our apple pies all formed inside collapsing stars. The conclusion is simple: we are made of starstuff. #CarlSagan

Milky Way over water Carl Sagan

3w