The Sky Tonight Update: Full Moon and Blue Moon

full moon, blue moon

The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated.

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The Sky Tonight Update: Full Moon, Super Moon, Blue Moon

full moon, super moon, blue moon

This January 31st, the Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated.  Since this is the second full moon in the same month, it is sometimes referred to as a blue moon. This is also the last of two supermoons for 2018. The Moon will be at its closest approach to the Earth and may look slightly larger and brighter than usual.

The Sky Tonight Update: Blue Moon & Mars at Opposition, May 20-23

This May 21st, the Moon will be located on the opposite side of the Earth as the Sun and its face will be fully illuminated. This full moon was known by early Native American tribes as the Full Flower Moon because this was the time of year when spring flowers appeared in abundance. This moon has also been known as the Full Corn Planting Moon and the Milk Moon. Since this is the third of four full moons in this season, it is known as a blue moon. This rare calendar event only happens once every few years, giving rise to the term, “once in a blue moon.” There are normally only three full moons in each season of the year. But since full moons occur every 29.53 days, occasionally a season will contain 4 full moons. The extra full moon of the season is known as a blue moon. Blue moons occur on average once every 2.7 years.

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