Astronomy April 2019

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Rusty Schweikart remembers Apollo 9
David J. Eicher
The lunar module pilot relives the challenges and triumphs when humans tested their spacecraft in Earth orbit.

Jim McDivitt: 10 days in orbit
Alison Klesman
Apollo 9 served as an engineering test, a hardware demonstration, and a vital steppingstone on the road to the Moon.

Sky This Month
Martin Ratcliffe and Alister Ling
Mars sweeps past the Pleiades

StarDome and Path of Planets
Richard Talcott; Illustrations by Roen Kelly