UPDATED: 10. MAY 2016, AT 14:09

The transit of Mercury across the Sun seen also in Slovakia

The transit of Mercury across the Sun on the afternoon of May 9 will be visible also in Slovakia.

Image by NASA and the ESA's Solar and Heliospheric Observatory of an earlier (2006) Mercury transit.(Source: AP/TASR)

This rare phenomenon occurs about 13 times in a century. The next chance will be in November 2019 but it will be only partially visible. The next fully visible transit will take place in 2032.

The spectacle begins at 13:12 on May 9 and ends at 20:40. i.e. after sunset, the TASR newswire wrote. “Observers from western Slovakia are slightly advantaged against those in the east, as in the west the Sun sets down 23 minutes later,” Pavol Rapavý of the Slovak Association of Astronomers told TASR. “As the angular diameter of Mercury is small, we will not be able to see it without a telescope, as it will be 157-times smaller than the seeming diameter of the Sun.”

The safest way to observe the phenomenon is a projection in a darkened room. “With the Sun having a diameter of 25 centimetres, Mercury will be a small black disc with a diameter of only 1.6 millimetres,” Rapavý said. “If we want to observe it directly, we put a good-quality filter in front of the telescope objective lens, e.g. the visual foil Astrosolar. The recommended minimal magnification is 50 times.” 

The processing of personal data is subject to our Privacy Policy and the Cookie Policy. Before submitting your e-mail address, please make sure to acquaint yourself with these documents.

Top stories

Coalition demands the right of reply for politicians

Politicians ponder new provisions for the Press Code, Speaker of Parliament Danko wants to defend himself against op-eds too.

The ruling coalition (L-R: SNS-Andrej Danko, Smer-Robert Fico. Most-Híd-Béla Bugár).

Maya expert: The world we live in is not the only one possible

Leading Slovak expert contributes to rewriting Maya history.

Milan Kováč

Slovakia’s Pohoda wins two prestigious European festival awards

The festival organiser praised the awards and says they want to continue and improve the quality of the summer festival.

"They united us." - tribute to Ján Kuciak and Martina Kušnírová at Pohoda 2018.

Theresa May at least has the courage to try

May keeps her job because nobody else is capable, or willing, to take on the impossible task of Brexit.

Theresa May