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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

Deaf Awareness Month empowers the hearing impaired

2015-09-21

There are more sign languages in the world than spoken languages. About 600 000 deaf South Africans have the South African Sign Language (SASL) as their first language. There are about 40 schools for the deaf in South Africa. 90% of all deaf children are born to hearing parents. Only about 30% of speech is visible on the lips.

How many of these fundamental facts did you know?

Deaf Awareness Month serves to educate hearing communities about issues that the deaf population face on a daily basis, as well as to honour the history and culture of people who are deaf or hard-of-hearing. For the past 70 years, the University of the Free State (UFS) has dedicated September to hosting events around the topic of hearing impairment.

The theme of ‘With South African Sign Language rights, our children can!’

This year’s theme had learners from Bartimea School for the Deaf and Blind, hearing impaired UFS students, and Prof Jonathan Jansen engaged in a conversation around empowerment at a picnic held on Monday 7 September 2015 at the Red Square on the Bloemfontein Campus.

Through a sign language interpreter, Matshela, a grade 12 learner, explained that he felt empowered by the efforts the university has made to embrace and empower individuals with disabilities. He then revealed his intentions of pursuing Information Technology or Social Work studies at Kovsies.

Clifford Machete, a first-year Administration student at the university, stated how sign language interpreters gave him an ‘I can’ attitude when he first arrived at university. “As a deaf person, I see that I am able to learn with the help of sign language interpreters. There is accessibility at the university, and I am so proud to be a student here and part of Deaf Awareness Month.”

Susan Lombaard, Lecturer and Acting Chairperson at the Department of South African Sign Language, believes that Deaf Awareness Month is about promoting human dignity.

“We want to show the world that deaf people can do everything, and that their language is as strong and important as any spoken language.”

For more information regarding Deaf Awareness Month activities, contact the South African Sign Language Department on 051 401 2251.

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