Annular Solar Eclipse
Annular Solar Eclipse: -
Solar eclipses occur when the Sun, Moon and Earth are aligned in a straight line, so that the Moon passes between us and the Sun and blocks its light.
The Moon's shadow can be divided into the umbra,
indicated as a dark gray cone, where the Moon appears to completely cover the
Sun, and the larger penumbra, where the Moon only partially covers
the Sun.
The umbra gets narrower at greater distances from the Moon,
since the Moon covers less of the sky when seen from greater distances, and so
needs to be more precisely aligned in order to cover the entire Sun. At a
distance of 373,000 km, the Moon appears with exactly the same angular size as
the Sun, and so the umbra narrows to a single point where the two objects are
perfectly aligned in the sky.
In the diagram to the right, the grid represents the plane
of the Earth's orbit around the Sun. As it circles the Earth, the Moon passes
through this Earth–Sun plane twice each month, at the points on the left and
right labelled as nodes. A solar eclipse happens only when one of
these node crossings happens to coincide with New Moon. This happens roughly
once every six months.
The Moon's orbit is tipped up by 5° relative to the Earth's orbit around the Sun, in the plane of the grid shown above. A solar eclipse only occurs at New Moon if the Moon is close to the Earth–Sun plane at the time, at one of two points called the Moon's nodes.
The Moon's shadow projected onto the Earth as the eclipse
proceeds. The hemisphere of the Earth facing the Sun is shown. Contours show
where various fractions of the Sun's disk is covered.
The Moon will pass in front of the Sun, creating an annular
solar eclipse visible from Canada and Greenland between 13:43 and 18:41 IST.
From India no eclipse will be visible (change location ).
The green cross in the centre of the Moon's shadow indicates the point of central eclipse, where the Moon appears exactly centered on the middle of the Sun's disk, and where an annular eclipse will be seen.|
Sunrise 05:54 Sunset 18:46 Twilight ends 20:06 Twilight begins 04:34 |
0% 30 days old |
All
times shown in IST. |
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