Great conjunction

On 21 December 2020, the planets aligned, appearing closer than they have since the middle ages, in what is being called a 'Christmas kiss'

The planets of Jupiter and Saturn will be coming together in a so-called "great conjunction" Monday, appearing to the naked eye like a single, bright star, a rare phenomenon that is expected to be even more impressive thanks to the proximity of Mars.

In a once in 20 years occurrence, Jupiter and Saturn will appear very close together in the night sky on Dec. 21.

The two gas giants will actually be hundreds of millions of miles apart but will appear exceptionally close, just a tenth of a degree apart or one-fifth of a full moon's diameter, according to Live Science.