Constellations

If you step outside tonight around 22:00 local time and face east, you’ll see a bright blue-white star roughly a third of the way up from the horizon. That’s Vega — the fifth-brightest star in the entire sky, magnitude +0.03, and your entry point to the largest asterism of the summer. Vega belongs to a pattern called the Summer Triangle: three stars in three separate constellations that together frame one of the richest stretches of sky visible from northern latitudes. You don’t need a telescope. You don’t need an app, though one helps. All you need is a clear evening and a rough sense of east. ...

You don’t need an app tonight. You need one pattern. The Big Dipper sits almost directly overhead on May evenings from mid-northern latitudes, and its seven stars — all between magnitude +1.8 and +3.3, easy to spot even under suburban light pollution — form the single best starting point for learning the rest of the sky. Five hops, no telescope, about ten minutes. What star-hopping is Star-hopping is the oldest navigation trick in observational astronomy: use a pattern you already recognise to find something you don’t. Point your eyes at a known bright star, move a known angular distance in a known direction, and land on the next target. ...