Fast Company

How To Experience The Transit Of Venus On June 5

Venus passes between the Earth and the sun--known as the Transit of Venus--just about twice per century. The last passage of our lifetime takes place June 5 (the next won't happen until 2117). Astronomers have watched this journey for centuries, but over time, technology has created new ways to experience the age-old event.

PAST In 1874 and 1882, an exciting new technology called photography documented the transit. A few early shutterbugs contributed to science: Their best shots were used to measure our solar system's size, and to increase our understanding of planets.

PRESENT Astronomers Without Borders offers a mobile app for amateur astronomers to document the transit (with the help of a telescope). For novice stargazers, the organization's web app lets anyone viewing the transit discuss it on Twitter and Flickr.

FUTURE Michael Zeiler, a GIS professional at Esri, which contributed to the development of the web app, expects big changes: "Humankind will have begun colonization of the solar system, and future settlers on Mars will witness the transit of Earth in 2084."

Photo by Flickr user royalty-free-images

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