An artificial horizon for sea use has been wanted for ... The fact is often overlooked that as the sextant is a double-reflecting instrument each degree of the circle is represented by two degrees ...

Four small suitcase-sized spacecraft, designed and built by Southwest Research Institute, have made a final Earth-side pit ...

NASA's four PUNCH spacecraft have arrived at Vandenberg Space Force Base and are preparing for a February launch.

[Ken] recently obtained an attitude indicator—sometimes called an artificial horizon—from an F-4 fighter jet. Unlike some indicators, the F-4’s can rotate to show pitch, roll, and yaw ...

[Ken] recently obtained an attitude indicator—sometimes called an artificial horizon—from an F-4 fighter jet. Unlike some indicators, the F-4’s can rotate to show pitch, roll, and yaw ...