Author Archives: Amy Gebhart

NASA Selects Astra III Professional for testing on ISS.

Sextants have been used by sailors for centuries, and NASA’s Sextant Navigation for Exploration Missions (Sextant Navigation) investigation takes the Celestaire Astra III Professional Marine Sextant to Space. In this clip is the Celestaire Astra III Professional Marine Sextant modified with 7×35 Prism Telescope. The Sextant Navigation for Exploration Missions (Sextant Navigation) investigation focuses on stability and star sighting opportunities in microgravity. Astronauts […]