Tomorrow's Lunar eclipse (that is the 21st of December 2010) and winter solstice to coincide for first time in 372 years. The eclipse will fall on the shortest day of the year – the winter solstice – for the first time since 1638.
The skies over Britain will turn a dark shade of red tomorrow morning as the moon moves into the Earth's shadow in a rare lunar eclipse.
A total lunar eclipse occurs when the sun, Earth and moon are almost exactly in line, with the moon and sun on opposite sides of our home planet.
The alignment will cause the full moon to appear much dimmer than usual, but sunlight passing through the Earth's atmosphere will give the lunar surface a deep reddish hue at dawn.
The eclipse is due to begin at 5.28am, as the moon enters the lightest part of Earth's shadow, known as the penumbra. In this early phase of the eclipse, the moon will appear yellowish in the pre-dawn sky.
A more significant dimming begins as the moon enters into the darker part of Earth's shadow at 6.32am and becomes completely eclipsed at 7.40am.
Unlike an eclipse of the sun, star gazers do not need protective eye equipment to observe a lunar eclipse.
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The partial eclipse begins when the Moon first enters the dark inner, umbral part of the Earth's shadow, and will become a total eclipse at 7.40am.
It will reach its maximum at 8.17am, and end at 8.53am.