From Galileo's meticulous sketches of Jupiter's moons in 1610 to Caroline Herschel's handwritten notes of comet discoveries, ...

Flight instructors (CFIs) must ensure accurate and complete logbook entries for all dual instruction, including ground training and simulator time, per FAR 61.51, and should not pre-sign blank ...

Since amateur radio operators first hooked up on the air almost a century ago, the “QSL card” has been an important final step in the communications process. The QSL card has traditionally been a ...