Don't Miss this ‘once in a lifetime’ end-of-year treat.

Great Jupiter-Saturn conjunction is happening today across the globe which is being popularly called as the “Christmas Star or the Bethlehem star”.

The Jupiter-Saturn conjunction is a special celestial event in which two planets of our solar system will come close within 0.1 degrees of each other (a fraction of the width of the full moon), overlapping to form a double planet.

Two of the biggest planets of our solar system i.e, Jupiter and Saturn will align the closest of each other on December 21, resulting in a ‘conjunction’.

#jupitersaturnconjunction dominated Twitter trends as people shared pictures and videos of the phenomenon.

This vibrant planetary conjunction will be easily visible in the evening sky starting from 6pm till 8 pm IST. The rare space event also marks the Winter Solstice, the shortest day time of the year.

The NASA (National Aeronautics and Space Administration) says, "It's been nearly 400 years since the planets passed this close to each other in the sky, and nearly 800 years since the alignment of Saturn and Jupiter occurred at night, as it will for 2020, allowing nearly everyone around the world to witness this 'Great conjunction'