10 must-see skywatching events to look for in 2020 Full-circle charts inevitably stretch constellations near the edges, just as Earth maps stretch remote continents. (For example, rectangular ...

Rosé and Stray Kids achieved remarkable milestones on the Week 50 Circle ... Chart, V Coloring Chart, Ringtone Chart and ...

Richard A. Proctor, on charts for great circle sailing, which is a very interesting development of the law of least force. The chart brought forward by Prof. Proctor is a stereographic projection ...