Anyone interests in astronomy? The last conjunction ocurred in 1882,100 years ago. And the next conjuction will happen in another 100 years later, in 2012. but I don't know whether I can see it. going to find it. 
The following news is from The Stars:
A rendevous between sun and Venus
June 7, 2004
By Patricia Reaney
London - More than three centuries ago on a cold afternoon in the tiny English village of Much Hoole, a British astronomer witnessed for the first time an event that would not happen again for more than 100 years.
Jeremiah Horrocks, a 20-year-old farmer's son who was completely self-educated in astronomy, calculated correctly that on November 24 1639 Venus would align between the sun and Earth and could be seen as it moved across the solar disc.
The event, first predicted by German astronomer Johannes Kepler in 1627, has occurred only six times since the invention of the telescope.
Amateur astronomers and the general public in most of Africa and Asia and throughout Europe will have the chance to observe the phenomenon, the first for 122 years, tomorrow. The next transit will not take place until June 6 2012.
"Horrocks got it dead right," said scientific historian Dr Allan Chapman of the University of Oxford.
Beginning at 5.19am GMT (7.19am SA time) for six hours, Venus will cross the path of the sun and, weather permitting, appear as a dark black dot about one-thirtieth the sun's diameter. The event will be visible for all of the morning in most of Africa and Europe, in the middle of the day in the Middle East and across Russia and India, and during the late afternoon from the Far East and Australia.
Just as Horrocks used the transit to formulate fundamental facts about the solar system, including calculating the astronomical unit, or distance of the Earth from the sun, amateur astronomers and schoolchildren around the globe can take part in a transit observation experiment organised by the University of Central Lancashire in England.
Using a transit calculator on the university's website (www.transit-of-venus.org.uk) they will be able to measure the distance from the Earth to the sun just as Horrocks did.
When the transit starts, Venus will appear as a dot on one side of the sun. By taking measurements as the planet tracks its way across the sun and using the transit calculator, they will be able to take measurements of the time it takes Venus to get from one end to the other.
Although Kepler had predicted that Venus would transit the sun in 1631, he never lived to see it.
He had not calculated that it would occur again in 1639.
"This is put down entirely to Horrocks's own originality," said Chapman. "From a mixture of his own meticulous observations of Venus, the sun and the planets ... he realised that the inferior conjunction of 1639 when Venus passes between the Earth and the sun would neither be above it or below it but bang across its middle."
He told his friend, a cloth merchant named William Crabtree, that it would happen.
By the time of the 1769 transit, more than 100 years later, co-ordinated international expeditions had been organised to witness the event across the globe.
When the next ones occurred in the 1870s and 1880s observatories and powerful telescopes were used to witness the event that happens four times in every 243 years.
There are two December transits, eight years apart, and then 121,5 years later there are two June transits, also with an eight year gap.
After another 105,5 years the cycle begins again.
Scientists have told anyone who plans to witness the transit of Venus not to try to view it with the naked eye, or through a telescope or camera because it can cause damage to the eyes and blindness.
They said indirect projection is the safest way to observe the sun.
"The transit of Venus will be a spectacular and memorable event.," said Professor Gordon Bromage, head of the University of Central Lancashire's Centre for Astrophysics. - Reuters
The following news is from The Stars:
A rendevous between sun and Venus
June 7, 2004
By Patricia Reaney
London - More than three centuries ago on a cold afternoon in the tiny English village of Much Hoole, a British astronomer witnessed for the first time an event that would not happen again for more than 100 years.
Jeremiah Horrocks, a 20-year-old farmer's son who was completely self-educated in astronomy, calculated correctly that on November 24 1639 Venus would align between the sun and Earth and could be seen as it moved across the solar disc.
The event, first predicted by German astronomer Johannes Kepler in 1627, has occurred only six times since the invention of the telescope.
Amateur astronomers and the general public in most of Africa and Asia and throughout Europe will have the chance to observe the phenomenon, the first for 122 years, tomorrow. The next transit will not take place until June 6 2012.
"Horrocks got it dead right," said scientific historian Dr Allan Chapman of the University of Oxford.
Beginning at 5.19am GMT (7.19am SA time) for six hours, Venus will cross the path of the sun and, weather permitting, appear as a dark black dot about one-thirtieth the sun's diameter. The event will be visible for all of the morning in most of Africa and Europe, in the middle of the day in the Middle East and across Russia and India, and during the late afternoon from the Far East and Australia.
Just as Horrocks used the transit to formulate fundamental facts about the solar system, including calculating the astronomical unit, or distance of the Earth from the sun, amateur astronomers and schoolchildren around the globe can take part in a transit observation experiment organised by the University of Central Lancashire in England.
Using a transit calculator on the university's website (www.transit-of-venus.org.uk) they will be able to measure the distance from the Earth to the sun just as Horrocks did.
When the transit starts, Venus will appear as a dot on one side of the sun. By taking measurements as the planet tracks its way across the sun and using the transit calculator, they will be able to take measurements of the time it takes Venus to get from one end to the other.
Although Kepler had predicted that Venus would transit the sun in 1631, he never lived to see it.
He had not calculated that it would occur again in 1639.
"This is put down entirely to Horrocks's own originality," said Chapman. "From a mixture of his own meticulous observations of Venus, the sun and the planets ... he realised that the inferior conjunction of 1639 when Venus passes between the Earth and the sun would neither be above it or below it but bang across its middle."
He told his friend, a cloth merchant named William Crabtree, that it would happen.
By the time of the 1769 transit, more than 100 years later, co-ordinated international expeditions had been organised to witness the event across the globe.
When the next ones occurred in the 1870s and 1880s observatories and powerful telescopes were used to witness the event that happens four times in every 243 years.
There are two December transits, eight years apart, and then 121,5 years later there are two June transits, also with an eight year gap.
After another 105,5 years the cycle begins again.
Scientists have told anyone who plans to witness the transit of Venus not to try to view it with the naked eye, or through a telescope or camera because it can cause damage to the eyes and blindness.
They said indirect projection is the safest way to observe the sun.
"The transit of Venus will be a spectacular and memorable event.," said Professor Gordon Bromage, head of the University of Central Lancashire's Centre for Astrophysics. - Reuters
