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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

UFS Centenary celebrations come to an end

2005-02-03

OFFICIAL OPENING

The official opening of the UFS will take place on Friday 04 February 2005 at 09:00 in the Reitz Hall (Centenary Complex). Please note that this is a test and lecture free day. The Rector and Vice-Chancellor, Prof. Frederick Fourie will be the keynote speaker. Refreshments will be served at the Centenary Complex after the opening ceremony.

The historic Centenary photograph will be taken at 11:00 on the eastern side of the Red Square (CR Swart parking area). All staff members and students are invited to be part of this massive photograph.

Important

• There will be no parking allowed on the CR Swart parking area until 12:00 on Friday 04 February 2005, as a result of the photo session.

• All academic staff members are requested to wear academic dress on the day, seeing as staff members will depict the Centenary emblem on the photograph. Academic gowns may be collected from the Gown Store on Wednesday 02 - Thursday 03 February 2005 between 08:00 and 16:00. Gowns must be returned to the Gown Store after the photograph has been taken.

SERVICE OF DEVOTION

A special service of devotion will take place on Sunday 06 February 2005 at 18:00 for 18:30 in front of the Main Building on the Red Square. This is a special gathering of students, hosted by all the interdenominational groups on the UFS campus. The evening will be a celebration of praise, thanks and worship, followed by a message from Dr Wollie Grobler. The evening will conclude with song and fireworks.

Staff members and students are welcome to bring their friends and families to this special event.

Important

• Even though there will be chairs in front of the Main Building, staff members and students are requested to bring extra pillows and blankets to sit on.

• No persons or vehicles will be allowed on the eastern side of the Red Square or on the CR Swart parking area, due to the security requirements of the fireworks show.

• All members of the choir are invited to be part of the mass choir. Lyrics will be provided.

• All persons who attend this event are requested to bring a candle for the purpose of the mass choir.

• Special transportation arrangements will be made for all service workers to enable them to attend the service. If there is someone in your faculty, department or division who would like to make use of this service, please send an e-mail to Elize Rall (ralle.stg@mail.uovs.ac.za) no later than Tuesday 01 February 2005.

OTHER ACTIVITIES

• A reunion for all former SRC members of the UFS will take place on the campus, from 04 February to 06 February 2005. An interesting programme is being planned. For more information, please contact Nicolaas du Plessis on 084 955 0875.

• The annual Rag Procession will take place on Saturday 05 February 2005. For more information, contact the Rag Office at X 2718.

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