appulse

Mars and Uranus will appear extremely close to each other in the night sky – this is known as an appulse.

In all consonants there is an appulse of the organs.

A driving or striking against; an appulse.

The near approach of one heavenly body to another, or to the meridian; a coming into conjunction; as, the appulse of the moon to a star, or of a star to the meridian.

The appulse or near approach is but one of the methods by which the spiral nebul� may have come into existence.