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shawnkat
Hey there!
It's hydrogen. As number one on the periodic table, it's everywhere. This is likely because it's the simplest element- made of just one proton and one electron. It's said that 90 percent of the visual universe is made of hydrogen.
Hope this helps!
CoffeeHead
Great question, Sergio. The most abundant element in the Universe is Hydrogen, being followed by Helium. 

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