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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

Splendid Summer Graduation concludes 2014 ceremonies

2014-12-11

Photo Gallery Afternoon session; Morning session
YouTube

On Thursday 11 December 2014, the university awarded a total of 392 qualifications during our Summer Graduation Ceremony in the Callie Human Centre on the Bloemfontein Campus. Of these, 225 were awarded to graduates from the Faculty of Health Sciences, while 134 master’s degrees and 33 PhDs were awarded in the other six faculties. Another 74 diplomas and 56 certificates were also awarded in the School for Open Learning.

Well-known radio personality, Redi Thlabi, and acclaimed cardiothoracic surgeon, Dr Susan Vosloo, encouraged and inspired the graduates during the two ceremonies on the day.

During the morning session, Thlabi imparted some of the valuable lessons she learned in her personal life as well as in her career. She encouraged graduates to change the script of our country for future generations, to be mindful of others and to find meaning in whatever you do.

“Those who have a platform, a voice and an education have the power to help others further on their journey,” Thlabi said. “I believe we are living in an exciting time – a time to leave a legacy behind, a time to make a mark in this world.”

Graduates from the Faculty of Health Sciences and the School for Open Learning were addressed by Dr Vosloo during the second ceremony.

Dr Vosloo often referred to the success of transformation at our university and added that few successes are achieved without adversity. She encouraged the afternoon’s graduates to become professionals with a high sense of dignity, accountability and transparency in their workplace.

“Remember that you and you alone are able to decide what your approach will be in anything in life from here on forward,” she said.

Dr Vosloo, a Kovsie alumnus, graduated in 1980. Shortly after this, she became the first female heart surgeon in South Africa. She is currently in independent private practice at Christiaan Barnard Memorial Hospital, having also worked from 1998 untill 2012 at the Vincent Pallotti Hospital in Cape Town.

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