The Largest Full Moon, Lemmon Comet, and Leonid Meteor Shower Illuminate November’s Night Sky!
November’s night sky will be full of celestial wonders! A supermoon — the largest in six years, the brightest Comet Lemmon of the year, and the Leonid Meteor Shower will appear one after another, making this month’s nights dazzlingly eventful.The Largest Supermoon in Six Years – November 5 (Wednesday)A full moon occurs on November 5 at 9:19 p.m., when the Moon will be near its perigee, just 356,978 km from Earth. With an apparent diameter of 0.57°, it will be the largest full moon of 2025, about 16.6% larger and 36% brighter than the smallest full moon in April — a difference comparable to a NT$50 coin and a NT$10 coin! The grand supermoon paired with terrestrial landscapes will create breathtaking views worth admiring.To celebrate, the Taipei Astronomical Museum will host a “Supermoon Flash Gathering” from 7:00–8:00 p.m. at the Sun Yat-sen Memorial Hall Plaza, inviting everyone to witness the biggest supermoon in nearly six years.Comet Lemmon — The Brightest Comet of 2025Comet Lemmon (C/2023 A3) will reach its closest point to Earth around October 21 and its perihelion on November 8. It is expected to shine brightest around October 30, reaching magnitude 4, visible through binoculars or even to the naked eye.The best viewing period is within a week before and after this date. Look toward the western sky shortly after sunset until about 7:00 p.m. to try spotting this year’s brightest comet. Leonid Meteor Shower — November 17 (Monday)The Leonid Meteor Shower, known for its spectacular meteor storms every 33 years, will reach its peak on November 17. While no meteor storm is expected this year, the zenithal hourly rate (ZHR) may still reach around 10 meteors per hour.Leonid meteors are known for their high speed and bright, persistent trails. The radiant rises at 11:30 p.m., and meteors will increase in number afterward. Under the faint light of the waning Moon, you can easily enjoy the show with the naked eye from a wide, dark-sky location.For more detailed information about November’s astronomical highlights, please visit the Taipei Astronomical Museum website.