The new moon occurs Aug. 4, at 7:13 a.m. EDT (0113 UTC). In the days following the new moon, our satellite will make a close pass to Venus; after that Venus and Mercury will be close together, making a visible pair in the evening sky.
A new moon describes the moment when the sun and moon share the same celestial longitude; this is called a conjunction. This happens about every 29.5 days. As the illuminated side of the moon faces away from Earth, new moons are invisible to ground-based observers unless the moon passes directly in front of the sun, which creates an eclipse (the next time that happens will be Oct. 2).
