Learn the night sky without an app: May's easiest star-hops for beginners

"Look, there's the Southern Cross !" I turned, expecting an outstretched arm and a finger pointing low to the horizon. Instead, she was pointing at her phone. Her friend hurried over, not to look up, but to look down — both of them staring at a glowing screen while, just beyond them, Crux was visible in the night sky. I wanted to interrupt them, to redirect their attention by a few degrees. Just lift your eyes! It's right there! I didn't say anything, but that sad sight stuck with me. …