The first Supermoon 2018 will kick off on January 1st, New Year’s Day and on January 31st that will also coincide with a lunar eclipse.
Supermoon 2018 referring to a full moon that appears larger and more luminous due to its increased proximity to the Earth.
The New Year’s supermoon should look about 14% bigger and 30% brighter than usual, the space agency reports. The final installment of the supermoon 2018 series will kick off on Jan. 31, which will be “extra special,” NASA says. The technical name is the perigee syzygy of the Earth–Moon–Sun system. The term supermoon is not astronomical, but originated in modern astrology.
What is its effect on tides?
The combined effect of the Sun and Moon on the Earth’s oceans, the tide, is greatest when the Moon is either new or full. At a lunar perigee, the tidal force is somewhat stronger, resulting in perigean spring tides. But, even at its most powerful, this force is still relatively weak, causing tidal differences of inches at most.
According to NASA, “The Moon will lose its brightness and take on an eerie, fainter-than-normal glow from the scant sunlight that makes its way through Earth’s atmosphere. Often cast in a reddish hue because of the way the atmosphere bends the light, totally eclipsed Moons are sometimes called ‘blood Moons.'”
On January 31 that will also coincide with a lunar eclipse. It occurs when the Moon passes directly behind the Earth into its umbra or shadow. This can occur only when the sun, Earth, and moon are aligned exactly, or very closely so, with the Earth in the middle.
The second full Moon in a month a Blue Moon, that makes it a super ‘blue Moon.’ Blue Moons happen every two and a half years, on average. With the total eclipse, it’ll be a royal spectacle indeed: a ‘super blue blood’ Moon.