The transits of Venus, visible in Central America and North America and will continue to Europe, is a unique opportunity for science but also to human curiosity, say experts.
“Essentially it’s an eclipse, the interesting thing that happens every hundred years,” said Eduardo Araujo, a scientist at the National Oceanic and Atmospheric Administration (NOAA).
“The planet passes between Earth and Sun and looks like a small point that the Sun travels,” he said.
The distance is so great that it has no effect on the earth but it is a “great opportunity” for scientists to study the wavy motion, gravitational forces, density, and many aspects as possible.
Now begins the collection of data, the results will not be immediately, studies will be completed in months and present the first findings.
“It’s an opportunity from the standpoint of the scientific world and from the point of view of human curiosity is unique too,” said Araujo, who recalled that not all generations have the opportunity to see a transition.
Transits of Venus are rare, occur in pairs eight years apart and then not recur over a hundred years later. The last was 2004 and after this, that completes the pair, experts estimate that there will be another until 2117.
NASA planned to begin at 22:09 GMT and is expected to have a duration of seven hours.
The entry is expected to occur between 22:09 and 22:27 GMT on June 5 and depart between 4:32 and 04:50 GMT.
Araujo encouraged to participate in any activity that NASA centers, planetariums and scientific organizations have been organized throughout the world to see this unique spectacle.
Although, recalled that it must be done with caution and “never look at the sun with the naked eye” because it can cause anything from eye injuries or even blindness in severe cases.
Experts recommend looking through telescopes or special glasses prepared, never with normal sunglasses.
Transits of Venus captured public attention in the eighteenth century, when the size of the solar system was one of the greatest mysteries of science, NASA recalls in an article.
The relative distance of the planets was known but not their absolute distances-how many miles between us and another possible world, and Venus was the key, according to astronomer Edmund Halley deduced (1656-1742).
Halley found that observing the transit from various places on Earth, it should be possible to triangulate the distance to Venus, prompting international expeditions to survey the transits occurred in 1761 and 1769.
Other split the explorer James Cook, who was sent to Tahiti in French Polynesia today in an effort that some historians have called “the Apollo program of the eighteenth century.”
NASA says that the experiment, in retrospect, it sounded better than it was the result, because the bad weather in some places of observation and the limitations of primitive instruments caused “confusion” on the actual density of the atmosphere of Venus and other data.
A late nineteenth century, astronomers, with modern instruments and cameras, finally managed to measure the size of the solar system as Halley had suggested to the data of registered transits in 1874 and 1882.
Now scientists at the twenty-first century, with satellites in space and better cameras than ever, hoping to study hundreds of phenomena as the behavior of extra solar planets in the search for life in the universe.