THERE will be a total eclipse of the moon on Monday... here's our guide from in-the-sky.org on what it is, when it's happening and how you can watch it.
The Moon will be partially eclipsed between 3.35am and 6.51am, with the total eclipse from 4.42am until 5.44am on January 21.
It's a supermoon, called the wolf moon, and the eclipse should cause a blood moon.
The Moon will pass through the Earth's shadow between 3.35am and 6.51am, creating a total lunar eclipse.
It will be visible in the western sky. The Moon will lie 27° above the horizon at the midpoint of the eclipse.
The total eclipse will last from 4.42am until 5.44am. The Moon will be partially eclipsed between 3.35am and 6.51am.
Eclipses of the Moon are easy to watch with the unaided eye. A modest pair of binoculars will give a superb view of the Moon's surface, but are not required. Unlike solar eclipses, lunar eclipses are entirely safe to look at without the need to look through any kind of filter.
When the Moon's disk lies entirely in shadow, it often takes on a spectacular reddy-brown color, as some of the Sun's red light is bent around the edge of the Earth's globe by its atmosphere.
Sequence of events
The eclipse will begin at 2.37am, when the Moon first enters a region of the Earth's shadow called the penumbra. In this outer part of the Earth's shadow, an observer on the Moon would see the Earth partially obscuring the Sun's disk, but not completely covering it. As a result the Moon's brightness will begin to dim, as it is less strongly illuminated by the Sun, but it remains illuminated.
At 3:35am, the edge of the Moon's disk will enter the Earth's umbra. This is the region of space in which an observer on the Moon's surface would see the Earth completely obscuring the whole of the Sun's disk, and would find themselves suddenly thrust into darkness.
As an increasing fraction of the Moon's face creeps into the Earth's umbra, it will appear to have a growing bite taken out of it. We will see our planet's circular shadow sweep across the face of the Moon.
Eventually the Moon will pass entirely within the Earth's umbra at 4.42am, and the total eclipse will begin.
The table below lists the times when each part of the eclipse will begin and end.
02:37 02:37 Moon begins to enter the Earth's penumbra
03:35 03:35 Moon begins to enters the Earth's umbra. Partial eclipse begins.
04:42 04:42 Moon fully within Earth's umbra. Total eclipse begins.
05:13 05:13 Midpoint of eclipse
05:44 05:44 Moon begins to leave the Earth's umbra. Total eclipse ends.
06:51 06:51 Moon fully outside the Earth's umbra. Partial eclipse ends.
07:48 07:48 Moon leaves the Earth's penumbra
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