How Many Seconds A Year

What Happens Every 100 Years?

The transit of Venus happens every 100 years. The last one was in June 2012, and the next i occurs in 2117. This happens as Venus straight passes between the Earth and the Dominicus. This one time-in-a-lifetime astronomical alignment has been witnessed eight times since the telescope was invented. These middle-witness-accounts occurred in 1631, 1639, 1761, 1769, 1874, 1882 and 2004, and the concluding was in June 2012.

The one-hundred-twelvemonth pair-pattern for the transit of Venus is due to the orbital nodes of Earth and Venus. Since these orbital nodes are changing, transits which used to occur in May and Nov are now happening in June and Dec. Fred Espenak of NASA has released a Six Millennium Catalog of Venus Transits; and, it contains predictions based on geocentric calculations.

The transit of Venus has helped astronomers summate Globe's distance from the Sun: It is calculated using the astronomical unit or AU. This transit was proposed past English astronomer Edward Halley in 1716. Scientists go along to study transits to this twenty-four hour period, to discover extrasolar planets and exoplanets beyond the solar system. The Kepler Mission was launched by NASA in 2009 to find exoplanets; and, some are equal to the size of the Earth.

How Many Seconds A Year,

Source: https://www.reference.com/science/happens-100-years-5d3b5d420d1212a4?utm_content=params%3Ao%3D740005%26ad%3DdirN%26qo%3DserpIndex&ueid=7a0c9816-c51d-4266-9f20-f215f48d377b

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