Magazine article Natural History

July Nights Out

Magazine article Natural History

July Nights Out

Article excerpt

1 The Moon is new at 4:54 a.m. eastern daylight time (EDT). A partial solar eclipse will be visible in the vicinity of the LützowHoIm Bay on the coast of Antarctica.

2 Venus is detectable about thirty minutes before sunrise, in the east-northeast. By midmonth, however, the planet is lost in the bright twilight.

4 At 1 1 :00 A.M. EDT, Earth arrives at aphelion, that part of its orbit which places it farthest from the Sun, at a distance of 94,51 1 ,923 miles.

6 Mars is low in the east-northeast as morning twilight begins. It is nearly half as bright as the orange star Aldebaran, 5.5 degrees to the planet's south.

7 As darkness falls, the Moon, in the southwest, forms a broad triangle with Saturn, 8 degrees above and to the right, and the bluish star Spica, 12 degrees to the upper left.

8 The Moon waxes to first quarter at 2:29 A.M. EDT.

10 For observers near latitude 40 degrees north, this is about the best night to look for Mercury, although it sets only about 85 minutes after the Sun. …

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