This Saturday , June 20, the southern hemisphere marks the winter solstice, and in Argentina you’ll experience the longest night of the year. To celebrate the transition from fall to winter and make the most of the darkness of the year’s longest night, Buenos Aires is joining a global initiative to observe the moon at its most magnificent. Get ready to view the moon for free, see its craters, and learn all about it.
Buenos Aires Celebrates the Longest Night of the Year with a Free Moon Viewing Through Historic Telescopes
Buenos Aires is getting ready to welcome the coldest season and the longest night of 2026 with a cosmic event of international magnitude: on the night of June 20, “On the Moon Again” will be celebrated worldwide—a planetary event where telescopes around the globe invite you to observe the Moon.
For the third consecutive year, Buenos Aires is connecting simultaneously with thousands of people in dozens of countries for a night of stargazing accompanied by talks where you can discover everything about the Moon, its craters, and its surface.
On the Moon Again: the global phenomenon that takes advantage of the darkness of the solstice
The “On the Moon Again” initiative was born out of a deeply democratic and collective spirit: to take science out of the laboratories and bring telescopes to cultural centers and public spaces to share them with the community.
In Buenos Aires, the Argentine Association of Friends of Astronomy is making its telescopes available for moon viewing and, led by Diego Córdova, you can also participate in a special talk.
More than 50 years after the historic Apollo missions, the major space powers are preparing to set foot on the moon once again. During the event, the mysteries and challenges of this new era will be discussed: Why is it vital to return now? What role will the discovered water and natural resources in orbit play? How is geopolitical competition in space shaping up? A unique opportunity to understand that the Moon is no longer just an object of poetic contemplation, but the next great frontier for humanity’s future. The talk and telescope observation begin at 7:30 p.m., and admission is on a first-come, first-served basis due to limited capacity . This very special evening begins at 7:30 p.m. and is a free event open to the public.
Useful information for joining the astronomical night
Get ready to experience a unique night where science, history, and the vastness of the universe come together on the longest night of the year. Arrive early and welcome winter by looking at the sky with fresh eyes!
- 📅When: Saturday, June 20, at 7:30 p.m.
- 📍Patricias Argentinas 550
