Planet Venus will have its date with the sun on June 6.
The inferior planet (called that as it is closer to the sun), will be
seen to move stealthily across the disk of the rising sun. Called a
transit, this is a rare astronomical event. A transit of Venus occurs,
when Venus passes directly between the sun and the Earth. The last time
this thrilling event occurred was in 2004, and the one which will occur
in June will be the last one in your lifetime, as the next such
alignment will occur only in 2117.
“Transits of
Venus are much rarer than those of Mercury. Transits of Venus only occur
approximately four times in 243 years. This rare alignment, come in
pairs that are eight years apart, but separated by over a century,” said
Dr. Iyamperumal, Executive Director, B.M. Birla Planetarium.
What
is the importance of this transit? “It helps give accurate estimates of
the all important distance scale – the astronomical unit – of the
distance between the Earth and the sun. This distance serves as a basis
for all other distance determinations in the Universe.
Astronomers
at the Birla Planetarium, Chennai will be teaching representatives of
every State in India about how to view the transit and the importance of
the event.
In connection with this, a special
programme called ‘Training the Trainers' has been arranged at the B.M
Birla Planetarium, Chennai, on April 24 and 25, for Science
Communicators.
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