By Dr. Noorali T. Jiwaji
Friday night of 27 July is a night not to be missed for observers of the night sky. On that night, the Full Moon will be covered up when it passes through the Earth’s dark umbra shadow when the Sun, Earth and Moon align almost exactly along a straight line producing an extremely deep eclipse that will last longest for this whole century.
The Moon will be covered up for longest time because it will be at its farthest distance from Earth hence it will be in the widest part of Earth’s shadow,
almost three Moon diameters wide. This total lunar eclipse will last 1hr43min which is close to two hours. Such long total lunar eclipses are extremely rare since the next longest lunar eclipse of 1hr46min will occur after 107 years on June 09 2123.
Lunar eclipses can be observed safely with naked eyes because the light from the Moon does not harm us and when it is covered in shadow it is very easy to
watch directly.
watch directly.
The lunar eclipse will start becoming visible at 9:24pm from the eastern edge of the Moon and over the next hour the dark black edge of the shadow will slowly slide westward until it reaches the west edge by 10:30pm when the whole Moon will enter the Earth’s shadow and the whole Moon will turn red.
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