On Tuesday morning, the moon will meet up with three of our closest neighbors in the solar system.
A very thin crescent moon, less than 5% illuminated, will appear low in the sky next to Mercury, Mars and Venus. Of the three planets, Venus will be most visible, shining bright during its current period of morning apparition. Mars will be less visible, and could require binoculars to make out near the horizon in the morning twilight. Mercury, meanwhile, will be fairly bright at around magnitude 0. In some areas with low light pollution and a flat, unobstructed view of the horizon, the world might be visible without optical aid.
