NICER mounted on the International Space Station

Astronomy in Space with David Dickinson

NASA to Use Pulsar Navigation for Deep Space Missions

NICER and SEXTANT demonstrate XNAV pulsar navigation system that may be used on Artemis.

NICER All-sky

Astronomy in Space with David Dickinson

NICER Maps the X-ray Sky

NASA's NICER instrument aboard the International Space Station is giving us a unique view of much of the X-ray sky.

A U.S. Navy officer uses a sextant at sea.

Astronomy and Society

Navy Resumes Celestial Navigation Course

Modern security threats have brought back an old method — celestial navigation — to help U.S. Navy sailors navigate the high seas.

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