You can tell spring has officially begun in the Northern Hemisphere just by looking at the stars. Here's how to easily spot the Spring Triangle without a telescope.

Spica reappears on the northwestern (upper ... respectively. In the Southern Hemisphere mid-latitudes, the nights are getting longer; in Buenos Aires the sun sets at 6:33 p.m. local time.

It has already achieved a brightness similar to famously bright stars like Antares and Spica – however ... it will be best seen from the southern hemisphere, where fewer people live.

This event signals the start of Spring in the Northern Hemisphere and Autumn in the Southern Hemisphere, a transition that also manifests in our evening skies as winter constellations start to vanish.