Jupiter, Saturn, and Mercury Will Form a Rare ‘Planetary Trio’ This Weekend
Right before Christmas, the two largest planets in our solar system formed a “double planet,” an incredible spectacle that hasn’t happened in hundreds of years. Soon, one more planet will be joining them for another rare celestial sight. This weekend, Jupiter, Saturn, and Mercury will form a triangle for the first time since October 2015, according to EarthSky.
Dubbed a “planetary trio” or a “triple conjunction,” the three planets will appear close together just after sunset from between Jan. 8 and Jan. 11. On Friday, Mercury started to move closer to Saturn, which will appear below Jupiter. The tightest grouping of these planets will occur on Sunday, Jan. 10.
The best way to catch the planetary trio is find a spot with an unobstructed view of the horizon while looking toward the direction of the sunset. It’s important to start searching for the planets no later than 45 minutes after the sun sets because they will fall out of view beneath the horizon by nightfall, according to EarthSky. It might be difficult to spot the planets (especially Saturn, the dimmest of the three planets) while they’re competing with the glow of the sunset, so it’s a good idea to bring along binoculars or a telescope.
Wondering what other celestial sights you can look forward to this year? Check out this complete list of full moon dates throughout 2021. Time to mark your calendars, sky watchers!
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