Once in a blue moon


"See below on weather maps , and as i fancy myself being an rte weather reporter so I can wear clothes like this."

RTEの有名お天気お姉さん、Jean Byrne。タイトな服がたまに不評を買っています。


as a side note for anyone interested , there is a super-blue-blood-moon. , happens once every 150 yrs

The new year was brought in with a stunning supermoon on the night of January 1
the next supermoon in 2018 will be on the night of January 31,
What's more, because it's the second full moon in the same calender month, it technically becomes a "blue moon" - an event that only happens every couple of years.

Supermoons are so-called because they appear larger and brighter in the sky than a regular full moon.

Look up on the nights of January 31 and even February 1 at about 2am (GMT) for the best view. There's a window of opportunity if there are clear skies.

A supermoon usually takes place every one to two years, when the full moon coincides with its closest point to Earth during its monthly orbit.

Because the moon has an elliptical orbit, one side - called the perigee - is about 48,280 km (30,000 miles) closer to Earth than the other side (the apogee).

When the sun, the moon, and Earth line up as the moon orbits Earth, that's known as syzygy
When this Earth-Moon-Sun system occurs with the perigee side of the moon facing us, and the moon happens to be on the opposite side of Earth from the sun, we get what’s called a perigee-syzygy.

That causes the moon to appear much bigger and brighter in our sky than usual, and it's referred to as a supermoon - or more technically, a perigee moon.
It's the rare moment when a second full moon appears during one calendar month, although its traditional meaning is slightly different.

A lunar month lasts about 29.5 days, whilst human months last anything between 28 and 31 days.
Occasionally, this means that a full moon can be seen twice in a month - which is referred to as a blue moon,
as well as being a supermoon, the January 31 moon will also enjoy a lunar eclipse.

The moon’s orbit around our planet is tilted so it usually falls above or below the shadow of the Earth

About twice each year, a full moon lines up perfectly with the Earth and sun such that Earth’s shadow totally blocks the sun’s light, which would normally reflect off the moon.
this is the first time Ireland has experienced a blue moon lunar eclipse in 150 years.
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.’"

So it turns out that the next supermoon in 2018 will actually be a super-blue-blood-moon.





ちょっと話がそれますが。。。英語のイディオムで、Once in a blue moonという言い方があります。


That kind of chance comes once in a blue moon。
I see her once in a blue moon。





にほんブログ村 海外生活ブログ アイルランド情報へ
にほんブログ村 海外生活ブログへ








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