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Space and satellites: awareness and observations

19 November 2024 | Story Pat Lamusse | Photo Supplied

Space and satellites 2024 — During the visit to the Naval Hill Planetarium, were from the left, Dr Mart-Mari Duvenhage and Prof Matie Hoffman from the UFS Department of Physics, Consul General Stephanie Bunce and Vanessa Toscano from the US Consulate, and Dinah Mangope from the Department of Physics.

A delegation from the United States (US) Consulate General in Johannesburg, including Consul General Stephanie Bunce and Public Affairs Officer, Vanessa Toscano, visited the Bloemfontein Campus of the University of the Free State (UFS). Consul General Bunce met with the acting Vice-Chancellor and Principal of the UFS, Prof Anthea Rhoda, and the Dean of the Faculty of Natural and Agricultural Sciences, Prof Paul Oberholster. The US delegation also visited the Naval Hill Planetarium.

The UFS recently received a grant from the US Embassy to fund a project to promote science education by highlighting the role of satellites in our lives. Colleagues from the Department of Physics had the opportunity to demonstrate first-hand how the planetarium technology will be used to implement the project, which poses the question – what if something happens in space that interferes with the thousands of satellites we use for communication, weather prediction, navigation, banking … surveillance?

Thanks to this grant, the UFS will explore these questions and contribute to space situational awareness (SSA) and space domain awareness (SDA). SSA involves knowledge about the orbits of spacecraft and space debris. SDA refers to the knowledge and understanding of all activities occurring within the space domain.

There are currently at least 10 000 active satellites in Earth orbit, most of which are in low Earth orbit (LEO). However, in addition to satellites, there are well over 45 000 objects larger than 10 cm in orbit, including more than 35 000 pieces of space debris, such as dead satellites, rocket bodies, and pieces from breakups and collisions. Since 1991, there have been at least six unintentional collisions between active satellites and space debris.

Space turned out to be not as big as once thought, especially not in low Earth orbit (LEO – altitude less than 2 000 km). To make things worse, there are plans to launch up to 100 000 new satellites into LEO over the next decade.

Prof Matie Hoffman from the UFS Department of Physics notes, “We live in an era when the space economy is growing fast and the number of objects in Earth orbit, including satellites and space debris, is increasing rapidly. This poses risks to operational satellites. Recent publicity around Elon Musk’s Starlink satellites has generated additional interest around this topic. It is important to raise awareness of the challenges, which will allow scientists to mitigate them.”

The project will involve expertise in optical satellite observations from the University of Michigan through Prof Patrick Seitzer, international patron of the Friends of Boyden Observatory, and the American Museum of Natural History (AMNH). The grant will fund planetarium upgrades that will enable education on space and satellites, as well as optical satellite observations from Boyden Observatory. Beneficiaries will include learners, higher education institutions (both locally and in the US), and the public. South African project partners will be the South African National Space Agency (SANSA), the Future African Space Explorers’ STEM Academy (FASESA), and satellite-related companies in South Africa.

The Boyden Observatory is ideally situated to provide valuable optical satellite observations in an area of the sky that is not accessible from existing satellite observing facilities, especially for objects in LEO. In fact, the first observation of space debris in geosynchronous orbit was from Boyden Observatory in 1967.

The project will be rolled out from the end of 2024, harnessing facilities at both Boyden Observatory and the Naval Hill Planetarium.

News Archive

UFS on the right track with transformation - Fulbright scholars

2010-08-27

Pictured from the left, are: Dr Wilmore-Schaeffer, Rev. Dr Streets and Ms Leah Naidoo (Senior Administrator of the Institute).
Photo: Mangaliso Radebe

“I think the university is not only on the right track but can really become a model for how to negotiate certain difficult processes, such as transformation, within a short period of time. I think it can become a model, not just for other universities, but also for the world.”

This was said by Dr Rozetta Wilmore-Schaeffer, who together with Rev. Dr Frederick J. Streets, recently worked with the International Institute for Race, Reconciliation and Social Justice at the University of the Free State (UFS) as Fulbright specialists. They helped the institute come up with ideas in terms of making the changes that are necessary for the transformation of the university.

“There is a great deal that has already been done despite the sense of urgency and impatience, and I think there is a great deal more to be done,” said Dr Wilmore-Schaeffer.

“I think this sense of urgency comes from those who are involved in the process of looking at the destination, the place that they want to be at, and feeling that they are very far from it.”

During their visit here the two had numerous conversations with both staff members and students.

“I have been most impressed by the students who I think are ready to make changes in many different ways – I am talking about students of all racial groups and gender. The fact that they are referring to transformation as ‘their struggle’ shows that they are prepared to make changes,” said Dr Wilmore-Schaeffer.
She, however, cautioned that there were those who were still against transformation taking place at the university.

“I think there is still some resistance from some quarters on both sides of the fence and I would expect that at this point in time. I think what is really hopeful is that there are so many students who are ready to make the changes, who are making the changes, who are struggling with issues around making the changes; and I think that is really the hope for the university and the hope for the future,” she said.

“The resistance is complex,” added Rev. Dr Streets. “It is around a fear for the future, the loss of identity on the part of both black and white students, and the desire for cultural continuity amongst white students as well as amongst a variety of ethnic black students.

“The resistance is about learning that you are not the only kid on the block anymore and how you then overcome the feeling of realising that you are not the dominant person anymore and that your culture is not the dominant culture anymore.”

They have given a preliminary report of their findings to the Rector and Vice-Chancellor of the UFS, Prof. Jonathan Jansen, which will be followed by a more detailed report later on.

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