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What makes up over 80% of our universe? You guessed it. Get more hydrogen facts here.
Hydrogen BasicsThe Energy of TomorrowHydrogen Properties

Hydrogen Basics

Hydrogen Basics The most abundant element, making up over 80% of our universe, hydrogen is truly the building block of our world.

Hydrogen consists of one proton and one electron. Highly reactive, it's almost never found in a naturally free state but rather bonded to other elements. Hydrogen is part of water and, therefore, essential to life.

Sources of HydrogenSources of Hydrogen
 Learn more about hydrogen and where we will get it.

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Hydrogen Basics In its free gaseous form, hydrogen is much lighter than air, rising and quickly dissipating when released into the atmosphere. Its high energy-to-weight ratio makes it an ideal spacecraft fuel. Invisible, odourless, and non-toxic, hydrogen is also widely used in the food, metal, glass and chemical industries.