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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

Theatre, photography, literature, and lectures: TFR Studies to showcase their success

2016-11-29

The end of the year usually introduces a mood of reflection on what was and what could have been. For Trauma, Forgiveness and Reconciliation (TFR) Studies at the University of the Free State, the past year recalls a flourish of achievements worth celebrating.

Therefore, TFR Studies held an end-of-year event to showcase the successes of 2016. This comprised lectures from leading researchers in social sciences and housing rights, the release of three new books, a theatre production, and a photo exhibition.

Description: TFR Studies to showcase their success Tags: TFR Studies to showcase their success

Lectures
Prof Anthony Collins – a leading scholar in identity and culture – will speak about violence in contemporary South Africa. Prof Collins, who holds a PhD from the University of California, Santa Cruz, has extensive knowledge in the interdisciplinary area of critical social sciences and won two national awards for teaching and learning.

In addition, housing rights activist Faeza Meyer will share her experiences of forced eviction and violence in Kapteinsklip, Western Cape. She will also talk about the process of documenting these experiences and working together with feminist historian Koni Benson.

New books
Breathe in the smell of fresh ink as Dr Samantha van Schalkwyk, Dr Kim Wale, and PhD candidate Naleli Morojele introduce their books to the public. Themes of violence and gender – pertinent to South Africa – thread through each of these books in unique ways.

Theatre
The award-winning play, AVU – directed and produced by Michelle Hoffman who is a master’s student at TFR – will be performed. The story dances between the blurry lines of reality and fantasy, between Boer and Bantu.

Photo exhibition
Lerato Machetela, a PhD candidate with TFR, has featured as one of SA’s Heroes for her work among the youth of Jagersfontein. Through an innovative method, Machetela is employing an arts-based approach to research through PhotoVoice. The result: a photo exhibition by the youth of Jagersfontein – and a rare opportunity to see the world through the eyes of a child.

Photo: Jagersfontein Diamonds in the Rough gumboots group, production still of AVU, and Prof Pumla Gobodo-Madikizela with the PhotoVoice exhibit.

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