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A banner signed by NASA employees and contractors outside Launch Complex 39B, where NASA’s Artemis II rocket is visible in the background. NASA/Joel Kowsky

NASA’s Artemis II plans to send a crew around the Moon to test equipment and lay the groundwork for a future landing

Several robotic spacecraft orbiting the Moon can take detailed pictures of its surface, so why send people around the Moon? A planetary geologist explains the benefits.
At the South Pole, which way is up? Abigail Bishop

Are people at the South Pole upside down?

An astrophysicist who spent time doing research at the South Pole gets to the bottom of how things feel at the ends of the Earth.
As this illustration of the Apollo VIII command module reentering Earth shows, heat shields protect the crew capsule from high temperatures. NASA Johnson Space Center

NASA’s crew capsule had heat shield issues during Artemis I − an aerospace expert on these critical spacecraft components

It’s a good idea to make sure your spacecraft can take the heat that comes with reentering Earth’s atmosphere before you put people in it.
An unusual date that comes to us from the heavens. Date image via shutterstock.com

Leap day: fixing the faults in our stars

We will get an ‘extra’ day this year, February 29. Where do these quadrennial liberties with our calendar originate?

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