When a celestial body, such as a moon, planet or an asteroid passes in front of another celestial body ... approach of the moon to Saturn (called an appulse). The moon, moving around the Earth ...

On Monday (Jan. 30), the moon will pass in front of Mars from the perspective ... for both the lunar occultation of Mars and the appulse of the moon and the Red Planet can be found on Live ...

At the same time as the appulse, the moon and Venus will also reach conjunction, which happens when they share the same right ascension (basically, a celestial body's "east-west" position in the sky).

Others will be able to view a close approach, called an appulse, which is when the Moon and Mars will pass within 6.2 arcminutes of one another. One of the reasons the event will be different for ...