Starting Saturday evening, you’ll be able to see not one, two or three planets in the night sky, but four. The graphic you see shows the moon's trajectory through the night sky. This means at its peak,

Six planets will form a rare planetary alignment in the night sky on Jan. 21; here is everything you need to know about the 'planet parade' including how to watch it at night.

In January, stargazers will be able to see four bright planets, the close dance of Venus and Saturn, Mars at opposition, and celestial views.

On Friday 17 January and Saturday 18 January, six planets will line up in the night sky, in an event that some astronomers refer to as a planetary parade. Mars, Jupiter, Neptune, Saturn, Uranus and Venus will appear together in a row, although Neptune and Uranus will only be visible with binoculars or a telescope.

Six planets will be visible from the visible eye throughout January in a somewhat rare astronomical occurrence known as a "planetary parade."