Last chance to see venus transit for over 100 years – Huawei Mobile Hotspot Manufacturer

In a little over a month’s time, sky-watchers will have what’slikely to be a once-in-a-lifetime experience, seeing Venus passacross the face of the sun. On 5 and 6 June this year, Venus will spend about six hours visibleas a small black dot on the sun”s surface, for the last timeuntil 2117. Venus and the Earth line up with the sun only rarely, because thetwo orbits are at a slight angle to each other, meaning thatgenerally Venus passes below or above the sun. Transits occur inpairs separated by eight years – the last one was in 2004 – withthe gap between pairs alternating between 105.5 and 121.5 years. OEM Wireless Router

In 1716, Edmond Halley proposed using a transit of Venus to predictthe precise distance between the Earth and the sun – a suggestionthat led to literally hundreds of expeditions all over the world toobserve the 1761 and 1769 transits. James Cook famously watched itat a site that’s still called Point Venus on Tahiti. Jay M Pasachoff, an astronomer at Williams College, Massachusetts,says he’s looking for a phenomenon called the ‘black-drop effect’.This is a strange, dark band linking Venus’s silhouette with thesky outside the sun that appears for about a minute, starting justas Venus first enters the solar disk. Writing in Physics World, Pasachoff says that observations of thetransit will help astronomers who are looking for extrasolarplanets. Huawei Mobile Hotspot Manufacturer

“Doing so verifies that the techniques for studying events onand around other stars hold true in our own backyard,” hesays. “In other words, by looking up close at transits in our solarsystem, we may be able to see subtle effects that can helpexoplanet hunters explain what they are seeing when they viewdistant suns.” As well as making Earth-based observations, scientists in Francewill be using the Hubble Space Telescope to watch Venus”stransit very slightly darkening the moon. Pasachoff andhiscolleagues even plan to use NASA’s Cassini spacecraft, noworbiting Saturn, to see a transit of Venus from the planet on 21December. “We are fortunate in that we are truly living in a goldenperiod of planetary transits, and it is one of which I hopeastronomers can take full advantage,” he says. Unlock Huawei Dongle Manufacturer

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