DHAKA: Within few days we would be able to see another astronomical rare event in our sky on June 6. Venus will be seen crossing over the Sun which we know as the transit of Venus.
Comparing with the moon again, it is the same phenomenon as the solar eclipse when moon crosses in between the Sun and earth and we see moon’s shadow casts on earth.
But during the transit of Venus we won’t see any shadow of Venus on earth’s surface because of the relative size of Venus in the sky compared to the Sun. The actual diameter of Venus is almost four times than that of moon which is only 3,474 km, and its actual size is almost 50 times than the Moon.
A repeat of this event named the "Transit of Venus" is the second of its kind in the present millennium with the previous taking place in 2004. The next transit will occur on 2117 December and then the next will be on 2025 December. The transit occurs in pattern which repeats every 243 years with pairs of transits eight years apart separated by a long gap of 121.5 years and 105.5 years.
General Secretary of Aunusondhitsu Chakra Biggyan Sangathan Aminul Islam said, “Dhaka will be able to see the tiny black dot of Venus moving across the disc of the sun from the morning.”
“The whole transit will take almost six hours and this is the time when Venus will move from the west sky to the east sky, the evening star would then become the morning star. The transit will end at about 10:55am”, he added.
He said, "People who want to follow Venus` glide across the sun from their homes can do so using an exposed fresh (unused) x-ray film which is light darkish black. This big sheet must be placed over the lens of the telescope or binoculars before watching. It will prevent direct rays of the sun from causing permanent damage to the eyes. The viewfinder of the telescope should be covered as well.”
The organization will arrange the magnificent display through Celestron 8-inch Schmidt-Cassegrain Telescope and other equipment at the ground of Motijheel Government Boys’ High School in the city.
It is open to all from 7am to 11pm.
BDST: 0437 HRS, JUNE 2, 2012
Edited by: Maria Salam, Asst Output Editor
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