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Close encounters of the planetary kind

28 January 2021 | Story Igno van Niekerk | Photo Supplied

conjunction_web read more — Pictured from the left: Lucas Erasmus from the Department of Physics, Piet le Roux from the Astronomical Society of SA – Bloemfontein, Quinton Kaplan from the Department of Physics, Thinus van der Merwe from the Astronomical Society of SA – Bloemfontein. Front: Prof Matie Hoffman

In his book, The World is Flat, Thomas Friedman mentions how at first countries, then companies, and eventually communities went global. In true flat-world fashion, a combined team of the University of the Free State (UFS) and the Astronomical Society of South Africa – led by Prof Matie Hoffman, Associate Professor in the Department of Physics – participated in a once-in-a-lifetime event with their counterparts from the Ellinogermaniki Agogi School and the Skinakas Observatory in Greece.

On 21 December 2020, Earth was treated to the Jupiter-Saturn conjunction, when the two planets were only 0.1 degrees apart in the sky. Although conjunctions are regular phenomena, NASA mentions that the great conjunction of Jupiter and Saturn in 2020 was the closest since 1623 and the closest observable since 1226! A pinkie finger at arm’s length could cover both planets – although they were still millions of kilometres apart in space.

Planning started months ahead of the event, with the Ellinogermaniki Agogi Observatory in Greece and the Boyden Observatory in Bloemfontein chosen as the two selected vantage points. From both the Southern and Northern Hemisphere, the conjunction would be broadcast live on YouTube. As with any other technical project on an international scale, challenges arose. For example, in the Northern Hemisphere, it was already dark at 17:45 while the South African astronomers were still basking in sunlight until after 19:00. The conjunction would only be visible from South Africa after 19:30, almost two hours after it would be visible in Athens. The time was well used, with the event including a word of welcome by the Consul General of Greece in South Africa, Ioannis Chatzantonakis, presentations on Saturn and Jupiter, as well as a virtual tour of the Boyden Observatory, emphasising its connection with Greece through its first Director, Stefanos Paraskevopoulos.

On Saturday, 19 December, the teams ‘gathered’ on opposite sides of planet Earth to do a dry run. One could sense the urgency and tension as both teams realised that they would have a huge captive audience on YouTube, and plans had to be made in case of connectivity challenges and if the weather did not allow the conjunction. As preparations progressed, Prof Hoffman was talking to his Greek counterparts and was simultaneously walking around with his laptop to share the landscape and activities via his webcam with colleagues in Greece.

Monday 21 December 2020 – the weather prediction was correct. Clouds covered the Free State sky and scattered raindrops started to fall. Revert to Plan B. A recording made on Saturday evening was shared via the YouTube link, while a live feed of the conjunction from elsewhere in South Africa was arranged. From both sides of the world, information was shared about the history of the venues, as well as the marvel of what was happening in space. Fortunately, expert planetary photographer Clyde Foster was able to share a live feed just after 19:30 from the observatory at his home in Centurion, Gauteng. Those attending the event where visuals and speakers were together on one screen – yet thousands of kilometres apart – watching an event in outer space, will indeed agree with Thomas Friedman: the world is flat. The live-stream event of the conjunction was a catalyst that will result in continued collaboration between the UFS and colleagues in Greece in the field of astronomy.

By the time of this writing, the livestream has reached more than 50 000 people.

Watch: Coverage of the Jupiter-Saturn conjunction here

News Archive

Prof Finkelstein current and only A-rated researcher in Probability and Statistics in SA

2014-10-28

Prof Maxim Finkelstein
Photo: Johan Roux

Prof Maxim Finkelstein from the Department of Mathematical Statistics at the University of the Free State (UFS) received an A-rating from the National Research Foundation (NRF). This makes him the only A-rated researcher in ‘Probability and Statistics’ regarding Mathematical Sciences in the country.

According to the NRF-rating process, a person with an A-rating is a world leader in his field.

Prof Jonathan Jansen, Vice-Chancellor and Rector, said: "I am absolutely delighted for Professor Finkelstein and for the fact that this is one of the clearest signs that the UFS has significantly increased its standards of research across the institution as a whole."

Prof Finkelstein says this rating means a great deal to him, since it is a reflection of his dedication and perseverance.

“Of course, the rating is not a goal in itself,” Prof Finkelstein says. “The goal is the high quality research and the rating is just an objective indication of this. Along with the satisfaction, this rating brings the responsibility for maintaining this high status in the future.”

Prof Finkelstein conducts his general research in the field of ‘Probability and Statistics’, but his specific area of focus is ‘Stochastic Modelling’. Prof Finkelstein solely lectures postgraduate students and also mentors a few master’s and PhD students. This affords him the time to mainly concentrate on his research.

“Finally, I wish to emphasise the fact that high-quality research became the prime goal at the UFS,” says Prof Finkelstein. He underscores the efforts of the Vice-Chancellor and the Vice-Rector: Research in creating excellent possibilities for researchers. This has already resulted in remarkable improvements in the UFS’s research outputs – and consequently an increase in the number of rated researchers at the university.

A total of 119 UFS researchers currently have evaluation and rating status from the NRF, says Nico Benson, Deputy Director: Research Development. Currently (October 2014) 29 researchers are still waiting for response from the NRF regarding applications submitted. A total of 16 ratings are already known. On the Qwaqwa Campus of the UFS, five researchers are rated.

Prof Finkelstein's A-rating will become effective from 1 January 2015. Ratings are valid for a period of six years and researchers are invited to apply for re-evaluation in the fifth year.

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