Altair shines somewhat less high in the southeast. Deneb is the brightest star a couple fists to Vega's northeast. Vega, the Triangle's brightest star, is passing the zenith (for skywatchers at mid-northern latitudes). ■ How soon in twilight can you see the big Summer Triangle? Face east and look straight up. ■ The Moon, a day past full, rises in early twilight with Jupiter now shining just one fist or less to its left, as shown above. Now, farm equipment comes with headlights. This gave farmers in the busy harvest season extra light to work in their fields. How did the Harvest Moon get its name? Supposedly, it's from the fact that at this time of year, the waning gibbous Moon after full keeps rising before the end of twilight for several days running (due to the low tilt of the ecliptic over the eastern horizon). The Moon forms a roughly equilateral triangle with those last two. The Moon rises in the east-southeast just after sunset.Īs the stars come out, you can see that the Moon is between bright Jupiter a couple of fists to its left or lower left, dimmer Saturn farther to the Moon's upper right (out of the frame below), and Fomalhaut, twinkling down to the Moon's lower right. ■ Full Moon tonight (exactly full at 5:59 a.m.
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