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Lunar Eclipse 3/3/07

Kelly

By Kelly
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Kelly

Kelly

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Thought I'd bring to your attention that tomorrow night (Saturday) there will be a Total Eclipse of the Moon. These happen when the Moon moves into the shadow of the Earth, stopping nearly all light from the Sun shining on it. The eclipse has two phases of activity before Totality.

Firstly, the penumbral stage. This is where the sun's rays are only partially blocked and there is only a partial shadow. the amount of darkening is only slight, and very difficult to observe. So this stage of the eclipse is nothing to get excited about. But for the record, this phase of the eclipse begins at 20:16. the Moon's light intensity does not change much. So, stay inside and have a nice, warm cup of tea. Until 21:30, where things get interesting.

The second phase of the eclipse is where things get nice and exciting. This begins with 'First Contact' as the Moon enters the Earth's Umbra. 'Umbra' is Latin for 'shadow' and it's where we get the word 'umbrella' from. This is the darkest part of a shadow, where all light is blocked off. At 21:30, you'll begin to see that the Full Moon (total eclipses of the Moon can ONLY happen at Full Moon) begins to disappear. In this instance, First Contact will happen at about '7:00' on the Moon's face.

Then comes the 'WOW' moment. You'll be able to observe that someone has put the light out on the Moon. This is 'Second Contact', where the Moon moves entirely within the Earth's Umbra. Now, owing to light refraction and other long words, only light within the 'red' part of the colour spectum actually reach the Moon's surface. This is what makes the Moon appear all different shades of red during this time of 'totality', from light red, to full-bodied claret, blood, rusty red. It remains this way until 22:43, when all of the Sun's light begins to shine on the Moon as it emerges from the Earth's shadow. This is known as 'Third Contact'. The reddish hue disappears, and the Moon will regain all its sunlight at 23:58, when the full lunar disc is displayed once more.

All that's left of the eclipse after that is another penumbral stage that, as I've said before, is rather un-spectacular. Time to move inside and watch pornography on Channel 5 or something this happens at 01:11 on Sunday morning. At 02:25, the Penumbral stage ends, and all you can do is wait until 00:34 on Feb 21st 2008 for the next one!

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Kelly

Kelly

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Kelly, you don't really think we'd believe you wrote that, do you? There's no mention of Richard Hammond.

I wrote most of it, but I had a bit of help from Wikipedia. :oops:

I'm not that thick, I won a quiz at a 'Star Night' many years and moons ago, and I won a shiny new book for it! I was very proud!

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Kelly

Kelly

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They say these eclipse thingys happen every 70 years or something, why is there one every other year?!

We only get total solar eclipses around every 70 years (the last one being 11th August 1999), but lunar eclipses are much more common, mainly due to the Moon's orbit being much smaller.

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Serin

Serin

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We only get total solar eclipses around every 70 years (the last one being 11th August 1999), but lunar eclipses are much more common, mainly due to the Moon's orbit being much smaller.

That's the one I remember. Wasn't particularly exciting, just went a little bit darker for about a minute!

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Kelly

Kelly

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I only remember it cos it was the day before my brother Jack was born. It's a running joke in our family that the eclipse wasn't to do with him being born early, like most people tried to tell us, but it was because my Dad mowed the lawn for the first time in his life!

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