The brightest and highest supermoon of the year is coming soon

In Vietnam, the ideal time to see the Cold Super Moon is after sunset on December 5 and looking to the east.

There will be a series of four consecutive supermoons in late 2025 and early 2026 - Photo: MOMENT

Astronomy enthusiasts around the world will witness an impressive phenomenon on the evening of December 4 (Eastern time) when the "Cold Supermoon" appears with the largest size of the year and at the highest position in the night sky compared to any other full moon of the year, according to LiveScience on December 3.

According to astronomers, this year's December supermoon will reach its maximum fullness at 6:14 p.m. on December 4 (Eastern Standard Time - EST), or 7:14 a.m. on December 5 (Vietnam time). The December Cold Moon will be in the constellation Taurus when it rises from the east.

Although the "fullest" moment only lasts for a moment, for moongazers, the moonrise moment is still the most impressive, when the Moon appears larger due to the visual effect of being closer to the horizon.

In Vietnam, according to the Hanoi Astronomical Association (HAS), the ideal time to watch the Cold Super Moon is after sunset on December 5 and looking to the east.

This Cold Moon is the third consecutive supermoon and the second largest and brightest full moon of the year, following November's Beaver Moon.

A supermoon occurs when the full moon coincides with the moon's closest approach to Earth, making its apparent size about 10% larger.

Although the Cold Moon will be at its fullest at dusk on December 4 (US time), astronomy enthusiasts can still observe a bright, full moon on December 3 and 5. In particular, the evening of December 5 is predicted to be the easiest time to observe, when the moon rises about an hour after sunset.

Additionally, December's Cold Moon always sits higher than any other full moon of the year. As the winter solstice (December 21) approaches in the Northern Hemisphere, the Sun will be at its lowest point in the sky during the day. Conversely, the full moon—which by definition always lies opposite the Sun—will be at its highest point at night.

In addition to the Cold Moon, many Native American communities have called the full moon in December by names such as the "Antlered Deer Moon," the "Exploding Tree Moon," or the "Long Night Moon."

The next full moon will be a "Wolf Moon" on January 3, 2026, which will be the last of four consecutive supermoons starting in late 2025.

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ANH THU

Source: https://tuoitre.vn/sap-dien-ra-sieu-trang-lanh-sang-va-cao-nhat-nam-20251203104955176.htm