Venus and earth only line up “in all 3 dimensions and traverses across the sun four times during an unusual 243 year cycle, with the transits coming in pairs separated by alternating periods of 121.5 and 105.5 years.For those who missed seeing the transit in-person, NASA says that the “next few transits will be in December 2117, December 2125, June 2247 and June 2255.” Continue reading for the video and more information.

According to Nasa, the transit will be the seventh one since the invention of telescope. The space agency’s Solar Dynamics Observatory spacecraft will carry out studies to calibrate its instruments as well as learn more about Venus’ atmosphere.

[Sources 1 | 2]

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