ANNULAR SOLAR ECLIPSE ON 21st JUNE
Top Current Affairs 17th June 2020
Source | Press Information Bureau
GS Paper I: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location – changes in critical geographical features (including waterbodies and ice-caps) and in flora and fauna and the effects of such changes.
- An annular solar eclipse will occur when the angular diameter of the Moon falls short of that of the Sun so that it cannot cover up the latter completely.
- An annular solar eclipse will occur on 21 June, 2020 (31 Jyaishtha, 1942 Saka Era).
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Context: An annular solar eclipse will occur on 21 June, 2020 (31 Jyaishtha, 1942 Saka Era).
- From India annular phase will be visible in the morning from some places within a narrow corridor of northern part of the country (parts of Rajasthan, Haryana and Uttarakhand) and it will be seen as partial solar eclipse from the rest part of the country.
- Few prominent places within this narrow annularity path are Dehradun, Kurukshetra, Chamoli, Joshimath, Sirsa, Suratgarh etc.
- In India, the obscuration of the Sun by the Moon at the time of greatest phase of the annular eclipse will be nearly 98.6%.
- The annular path passes through Congo, Sudan, Ethiopia, Yemen, Saudi Arabia, Oman, Pakistan, northern parts of India and China.
- The Moon’s penumbral shadow produces a partial eclipse, visible in the region covering Africa (except W. and S. parts) S. E. Europe, Asia (except N. and E. Russia) and northern parts of Australia.
What important points you need to know about Solar Eclipse from UPSC Point of view?
- How it occurs? : A solar eclipse occurs on a new moon day when the Moon comes in between the Earth and the Sun and when all the three objects are aligned.
- An annular solar eclipse will occur when the angular diameter of the Moon falls short of that of the Sun so that it cannot cover up the latter completely. As a result a ring of the Sun’s disk remains visible around the Moon.
- What are the different types of solar eclipses that occur in nature? : There are three types of eclipses:
- One is a Total Solar Eclipse, which is visible only from a small area on Earth. People who are able to view the total solar eclipse are in the centre of the moon’s shadow as and when it hits the Earth. A total solar eclipse happens when the sun, moon and Earth are in a direct line.
- Second type of a solar eclipse is a Partial Solar Eclipse, in which the shadow of the moon appears on a small part of the sun.
- Third kind is an Annular Solar Eclipse, which happens when the moon is farthest from the Earth, which is why it seems smaller. In this type of an eclipse, the moon does not block the sun completely, but looks like a “dark disk on top of a larger sun-colored disk” forming a “ring of fire”.
- What else happens on 21st of June? : This day usually marks the summer solstice in the Northern Hemisphere and the winter solstice in the Southern Hemisphere, which is the day of the year with the most hours of daylight in the Northern Hemisphere and the fewest hours of daylight in the Southern Hemisphere.
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