In a event that won't be seen again until the year 2040, seven planets will align in the sky at the same time on 28 February - with experts noting that the best time to view the celestial phenomena is

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to glimpse all seven in one sweeping view.

Mercury joins the night sky to complete a seven-planet alignment just after sunset for the end of February. Saturn leaves our view starting in March. Look up!

Mars, Jupiter, Uranus, Venus, Neptune, Mercury and Saturn will appear in a row on the evening of 28 February, marking the last time for 15 years that all of the planets will be visible at the same time. Planetary parades of four or five planets happen relatively regularly, though alignments of six or seven are remarkably rare.

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many bright planets at once.

To see the whole shebang, you’ll need a pretty unobstructed view of the horizon in an area with relatively little light pollution, so you might consider heading to higher ground further from city lights that evening after work — unless you’re the owner of a sweet little cabin atop Petit Jean Mountain, in which case: Party at your house?