This weekend, three planets will nestle together in the western sky at twilight to form a rarely seen glowing triangle. With good timing and a bit of luck you should be able to see it without a telescope.

Mercury, Venus, and Jupiter have been converging in the sky in the past month and will form their tightest clump on Sunday, May 26. This triple conjunction - visible from most of North America and Europe - will be easiest to see with the naked eye between 30 and 60 minutes after sunset, according to NASA.

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