03/19/2026
π This Week in Space | March 16 β March 22, 2026
Skywatchers have a busy week ahead with planetary conjunctions, a triple alignment, a comet reaching perihelion, the March equinox, and an asteroid at opposition. Hereβs what to watch for in the sky! πβ¨
π March 17 β Moon & Mercury Conjunction
The Moon will pass close to Mercury, creating a beautiful pairing in the sky. This conjunction will occur when the two objects appear near each other from our perspective on Earth.
π Time: around 04:00 UTC
π Look low on the horizon during twilight for the best chance to spot Mercury.
π March 18 β Triple Conjunction of the Moon, Mars & Mercury
A rare and interesting alignment will occur as the Moon, Mars, and Mercury gather close together in the sky. Such triple conjunctions are relatively uncommon and make for a striking celestial sight.
π Time: around 07:00 UTC
βοΈ March 18 β 88P/Howell at Perihelion
The periodic comet 88P/Howell reaches perihelion, the closest point in its orbit to the Sun. Although it may not be visible to the naked eye, it becomes an interesting target for observers using telescopes.
π Time: around 10:00 UTC
π March 20 β March Equinox
The March Equinox marks the moment when the Sun crosses the celestial equator, making day and night nearly equal in length around the world. It also signals the start of astronomical spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
π Exact Time: 09:01 UTC
π March 20 β Moon & Venus Conjunction
Later the same day, the Moon will appear close to the dazzling planet Venus, one of the brightest objects in the night sky. The pairing will create a beautiful view shortly after sunset or before sunrise depending on your location.
π Time: around 13:00 UTC
πͺ¨ March 21 β 20 Massalia at Opposition
The asteroid 20 Massalia reaches opposition, meaning it will lie directly opposite the Sun in the sky. At this time it will be brightest and best positioned for observation with telescopes.
π Time: around 18:00 UTC
β¨ Clear skies and happy sky watching this week! Keep looking up and enjoy the wonders of the universe. π