By Heather Durham | March 31, 2025
April 2025 promises to be a celestial playground for stargazers in New Hampshire and across New England! As winter’s grip finally loosens, our night skies offer a veritable buffet of astronomical delights.
The month begins with a celestial dance as the Moon glides near both Uranus and the beautiful Pleiades cluster on April 1st. This sets the stage for a month filled with planetary encounters, with Mars making a notable appearance near the Moon on April 5th. You’ll want to dust off those lawn chairs and prepare for some neck-craning sessions as four planets align on April 15th, creating a cosmic connect-the-dots across our evening sky.
The Full “Egg Moon” arrives on April 13th, appearing as a Micromoon due to its more distant position in orbit. This smaller-than-usual full moon might not impress with its size, but what it lacks in apparent diameter it makes up for in folklore and tradition. Early Native Americans named it the “Pink Moon” for the moss pink wildflowers blooming in spring, though I’ve yet to see this lunar disk actually turn pink (despite staying up way too late with far too much coffee hoping for a rosy moon!).
For early risers, the predawn skies offer multiple planetary conjunctions, with Mercury playing a prominent role throughout the month.
The undisputed highlight of April 2025 has to be the Lyrid meteor shower, peaking on the night of April 21-22. This medium-strength shower typically produces 10-15 meteors per hour under ideal conditions, though patient observers might witness up to 18 per hour at its peak around 13:00 UTC on April 22nd. What makes this year’s show particularly promising is the cooperative Moon – a waning crescent that will only be about 40% illuminated, providing minimal interference with meteor watching.
The Lyrids radiate from the constellation Lyra (hence their name), near the bright star Vega, but can appear anywhere in the sky. These meteors are the cosmic debris left behind by Comet C/1861 G1 Thatcher, which has been orbiting our Sun for thousands of years, leaving a trail of dust particles that our planet intersects each April. When these tiny bits of comet dust hit our atmosphere at speeds of about 30 miles per second, they create the bright streaks we call meteors.
For New Hampshire viewers, the best viewing will be from a dark location away from city lights after midnight, when the radiant rises higher in the eastern sky. Bundle up with blankets, bring hot chocolate, and prepare for nature’s own fireworks display – just remember that patience is key, as meteors often arrive in clusters with lulls in between.
Mercury reaches its greatest western elongation on April 21st, coinciding with the Lyrid meteor shower peak and creating a double astronomical treat. This elusive innermost planet will be at its maximum angular separation from the Sun (27.4 degrees) as viewed from Earth, making this the best Mercury viewing opportunity of 2025. For New Hampshire observers, look toward the eastern horizon about 45 minutes before sunrise.
Mercury will appear as a bright star-like object roughly 10 degrees above the horizon – that’s about the width of your fist held at arm’s length. Binoculars can help locate it initially, but once spotted, Mercury should be visible to the naked eye at a respectable magnitude of 0.3. This particular elongation is special because Mercury will be higher in the morning sky than at any other time this year. The planet’s visibility is enhanced by its position relative to the ecliptic (the Sun’s apparent path), which makes spring mornings ideal for Mercury-watching in the Northern Hemisphere. If clouds interfere on the 21st, don’t worry – Mercury remains well-positioned for several days before and after maximum elongation.
For an added challenge, try spotting Neptune extremely close to Mercury on April 17th, though you’ll need binoculars or a small telescope for the distant ice giant.
April 1: Moon near Uranus – Waning crescent Moon passes 4°40’ from Uranus in Aries, visible with binoculars in evening sky. Moon near Pleiades – 18% illuminated Moon comes within 0°36’ of the beautiful star cluster, easily visible to naked eye.
April 5: Moon near Mars – 10% illuminated crescent Moon passes within 2°07’ of reddish Mars in Gemini constellation, visible in western evening sky.
April 10: Mercury near Saturn – The two planets come within 2°06’ of each other low in the eastern pre-dawn sky, challenging but possible naked-eye target.
April 13: Full “Egg Moon” (Micromoon) – Occurs at 00:24 UTC, appearing slightly smaller than average full moons.
April 15: Four-planet alignment – Mercury, Venus, Saturn and Neptune form a line in the pre-dawn sky, with three visible to naked eye.
April 17: Mercury near Neptune – Closest planetary conjunction of 2025 (0°42’ separation), Mercury visible to naked eye but Neptune requires optical aid.
April 21-22: Mercury at greatest western elongation – Best Mercury viewing opportunity of 2025, visible in eastern pre-dawn sky at 27.4° from Sun. Lyrid meteor shower peak – Medium strength shower producing 10-18 meteors per hour, best viewed after midnight from dark locations.
April 25: Saturn near Venus – Two bright planets visible close together in pre-dawn eastern sky. Moon near Venus – Thin crescent Moon passes near brilliant Venus before sunrise. Moon near Saturn – Crescent Moon also visits Saturn in same morning sky area. Moon near Mercury – Crescent Moon completes planetary tour near Mercury.
April 27: New Moon (Super New Moon) – Occurs at 19:32 UTC, excellent time for deep-sky observation with no moonlight interference.
References
American Meteor Society. (2025). Meteor shower calendar 2025-2026. Retrieved from www.amsmeteors.org/meteor-showers/meteor-shower-calendar/
EarthSky. (2024, December 30). 11 dazzling celestial events to see in 2025. Smithsonian Magazine. Retrieved from www.smithsonianmag.com/smart-news/11-dazzling-celestial-events-to-see-in-2025-from-a-total-lunar-eclipse-to-rare-planetary-alignments-180985750/
NHPR. (2025, January 1). Look up! Here’s what’s to watch for in space in 2025. Retrieved from www.nhpr.org/2025-01-01/look-up-heres-whats-to-watch-for-in-space-in-2025
PhotoPills. (2025, January 1). Astronomical events 2025: The definitive photography guide. Retrieved from www.photopills.com/articles/astronomical-events-photography-guide
Planetary Society. (2025, February 6). Calendar of space events 2025. Retrieved from www.planetary.org/articles/calendar-of-space-events-2025
Sea and Sky. (2023, April 22). Astronomy calendar of celestial events 2025. Retrieved from www.seasky.org/astronomy/astronomy-calendar-current.html
Star Walk. (2024, December 19). Calendar of all astronomical events 2025. Retrieved from starwalk.space/en/news/astronomy-calendar-2025