People at NASA headquarters take deep breaths when the words “First Story” appear in their email. Late this spring, Curt Niebur, the lead scientist for flight programs, received such a message.

Your donation makes it possible for us to keep doing this important work, keeping you informed every step of the way to the November election Nasa has issued an alert for a stadium-sized asteroid ...

But after fears that their Boeing Starliner spacecraft was unsafe to fly back on, Nasa delayed Suni Williams and Butch Wilmore’s return until 2025. They are now sharing a space about the size of ...

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The ozone layer is a layer in Earth's atmosphere that absorbs most of the Sun's UV radiation. It contains relatively high concentrations of ozone, although it is still very small with regard to ...