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Rare transit of Mercury to take place on 11 November



 Rare transit of Mercury to take place on November 11
A photograph of the transit of Mercury of 9 may 201
6. Mercury is seen in silhouette as the dark point below left of center. The other dark features are sunspots. Credit Wikipedia / Elijah Mathews License type Attribution-ShareAlike (CC BY-SA 4.0)
            

A rare transit of Mercury wants to take place on 11 November, when the smallest planet in our solar system wants to pass between the Earth and the Sun. During the transit, which takes place in the afternoon in the UK, Mercury wants to appear as a dark silhouetted disc set against the bright surface of the sun.
                                               

The transit begins at 1235 GMT, when the edge of Mercury appears to touch the edge of the Sun, and ends at 1804 GMT when the edge of the silhouetted planet appears to leave the Sun. Observers in different locations wants to take a little different path across the Sun.

On the morning of 11 November, UK amateur astronomical societies and Public Observatories wants to see the events where members of the public can safely enjoy the transit, as well as the live webcasts of the spectacle. The Royal Astronomical Society wants to support a (free) event run by the Baker Street Irregular Astronomers at Regent's Park, central London, where members of the public can book the transit using appropriate equipment at no cost.

Professor Mike Cruise, President of the Royal Astronomical Society, says the transit for people Transits are a visible demonstration of how the planets move around the Sun, and everyone with access to the right equipment should take a look, or go to an event if the weather is clear, or follow one of the live webcasts. "

The whole event is visible from the eastern United States and Canada, the south-western tip of Greenland, most of the Caribbean, central America, the whole of South America and some of west Africa. In Europe (including the UK), the Middle East, and most of Africa, the Sun wants to set the transits ends, and so the last part of the event will not be visible. In most of the United States and Canada, and New Zealand, the transit will be in progress as the sun rises. Observers in eastern Asia, southern and south-eastern Asia, and Australia will not be able to see the transit.

Mercury completes each orbit around the Sun every 88 days, and passes through the Earth every 116 days. As the orbit of Mercury around the Sun is tilted against the Earth's orbit around the Sun, the planet normally appears to pass above or below our nearest star. Mercury and the Sun are exactly in line in three dimensions.

There are 13 or 14 transits of Mercury each century, so they are comparatively rare events, though each one can be typically seen over a large area of ​​the Earth's surface. French transit astronomer Pierre Gassendi

At any time, Mercury blocks out a little bit of the light from the sun. This means that the event should NOT be viewed with the naked eye.

The Society for Popular Astronomy (19659005) The Society for the Popular Astronomy example by projecting the solar image with binoculars or a telescope.

Observers with access to a moderate-sized telescope with Mercury as a dark disc, comparable in apparent size to a sunspot, but somewhat darker. At the beginning and end of the transit, when Mercury's limb is close to the edge of the Sun, it may be to see the 'black drop' effect, where the planet to the solar limb. This is so close to the Sun, Mercury is difficult to study in detail using telescopes on Earth. Two NASA space probes have visited Mercury, Mariner 10 in 1974 and 1975, and MESSENGER, which orbited the planet from 2011 until a deliberate crash landing in 2015. The European Space Agency mission BepiColombo launched in 2017, and is expected to study the planet from 2024 onwards.

Transition techniques are also deployed to study objects outside of our solar system, and for example, NASA Kepler's space telescope uses it to confirm the presence of 2,662 planets in orbit around other stars. The same technique will be used by the European Space Agency's PLATO mission, expected to launch in 2026.
                                                                                                                        


Rare transit of Mercury to take place on 9 May


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Royal Astronomical Society




Citation :
                                                 Rare transit of Mercury to take place on 11 November (2019, November 8)
                                                 retrieved 8 November 2019
                                                 from https://phys.org/news/2019-11-rare-transit-mercury-november.html
                                            

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