Rare 'blue supermoon' total eclipse to occur in Singapore on 31 January

Star Talk Rare eclipse of a blue moon coming in January

A second full moon for the month of July is seen next to the dome of the U.S. Capitol

A supermoon glows brighter than the average moon, pictured here in detail from Valencia, Spain, on January 1.

A passenger plane passes in front of the wolf moon as it approaches Heathrow Airport in London on January 1. What makes the super moon also a blue moon is the flawless, dual timing of the second full moon of the month (a blue moon) - a rare occurrence in itself - and the moment when the moon is closest to Earth in its orbit, making it appear bigger and brighter than usual.

According to NASA, a blue moon happens every two-and-a-half years.

The moon is called supermoon when it is visible full and is at at near its closest point in its orbit around Earth. Along the U.S. Atlantic Seaboard, for instance, the moon will have only just begun to enter the darkest part of Earth's shadow, the umbra, at 6:48 a.m. EST when it will disappear from view below the west-northwest horizon. By that criteria, we should get a cycle of several supermoons about every 14 full moons. On January 2, the moon rose as a perigree full moon, when its orbit is closest to Earth, so it looks larger and brighter.

The start of the year 2018 began with a rare version of super moon that was witnessed by people all over the world.

A "blue" moon has nothing to do with color.

But know that these names can make an event like this sound more dramatic than it appears - it won't be anything like the total solar eclipse of 2017. On America's East Coast the eclipse will start coming into view at 5:51 a.m. and will give viewers in cities like NY only a small window to see the reddish moon. "The lunar eclipse on January 31 will be visible during moonset".

2018 will be a year of blue moons, as another one is due to appear on March 31. "But it's another great chance to watch the moon". "Often cast in a reddish hue because of the way the atmosphere bends the light, totally eclipsed moons are sometimes called 'blood moons'".

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