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See rare ‘Earthshine’ phenomenon glimmering on the New Moon this WEEK

STARGAZERS will have two chances to spot a rare ‘Earthshine’ phenomenon occurring on the Moon this week.

A slim crescent Moon on Friday and Saturday means that Earthshine should be possible to spot with the human eye.

Earthshine is sunlight reflecting from Earth onto the Moon and revealing it’s unlit area

What is Earthshine?

You may have noticed Earthshine before without realising it.

Earthshine is sunlight reflecting off the Earth and onto the lunar surface.

It’s only visible to detect with the naked eye when the Moon is in its slimmest stages as Earthshine can be seen lighting up the unlit part of the Moon that’s facing us.

That’s not to be confused with the ‘dark side of the Moon’ which always faces away from Earth.

Getty Images - Getty
Earthshine can be viewed just after sunset or just before dawn[/caption]

Sometimes when you look at the crescent Moon you can also make out the rest of it’s round shape despite it appearing very faintly.

That’s Earthshine in action.

Historically, this celestial phenomenon has been referred to “the new Moon in the old Moon’s arms.”

Earthshine can only be viewed with the naked eye when a very slim crescent Moon appears at twilight.

If the sky is too dark you won’t be able to see it and if the portion of the lit up Moon is too large you also won’t spot it.

The Moon appears to change shape on a cycle every month because as it orbits Earth, the Sun lights up different parts of the Moon’s surface.

How to see Earthshine

This best time to view Earthshine this week will be just after sunset on Friday or Saturday.

You could also try looking just before dawn in the early hours of the morning.

If you happen to miss the Earthshine of this current Moon cycle than you can wait again until another crescent Moon appears.

The next very slim crescent Moon phase after this weekend will be around February 8.

The different types of moons

Here are some of the most interesting moon phases and when to see them...

A Blue Moon refers to the occasion when a full Moon appears for the second time in the same month, this is very rare.

The Harvest Moon appears around the time of the autumnal equinox when farmers tend to do their main crop harvesting.

A Supermoon appears when it is at its closest point to Earth and therefore at its brightest, the next one will appear in September.

A Blood Moon occurs during a total lunar eclipse.

Each month of the year actually has its own special full Moon phenomenon, they are as follows:


  • January: Wolf Moon
  • February: Snow Moon
  • March: Worm Moon
  • April: Pink Moon
  • May: Flower Moon
  • June: Strawberry Moon
  • July: Buck Moon
  • August: Sturgeon Moon
  • September: Full Corn Moon
  • October: Hunter’s Moon
  • November: Beaver Moon
  • December: Cold Moon.

In other space news, experts have been left astonished after a supermassive has seemingly gone missing.

Uranus, Mars and the Moon will make a pretty close approach later this month.

And, four Supermoons will be gracing the night sky in 2021.

Will you be looking out for the ‘Earthshine’ phenomenon? Let us know in the comments…

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