Europe's Ariane 6 rocket finally ready for liftoff

Europe's new Ariane 6 rocket is set for its first-ever launch next week, carrying with it the continent's hopes of regaining independent access to space and fending off soaring competition from Elon Musk's SpaceX.

July's night sky notes: A hero, a crown, and possibly a nova

High in the summer sky, the constellation Hercules acts as a centerpiece for late-night stargazers. At the center of Hercules is the "Keystone," a near-perfect square shape between the bright stars Vega and Arcturus that ...

Determining the safest Mars caves for future astronauts

When astronauts land on Mars someday, they might have to live in lava caves or lava tubes to survive the harsh radiation that rains down on the Martian surface every second. But which caves could offer them the best chance ...

NASA shares two new Moon to Mars architecture white papers

NASA has released two white papers associated with the agency's Moon to Mars architecture efforts. The papers, one on lunar mobility drivers and needs, and one on lunar surface cargo, detail NASA's latest thinking on specific ...

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