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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

Out-of-the-box thinking a plus for next generation of agribusiness leaders

2017-07-07

The winners of the 12th IFAMA International Student
Case Competition from Team South Africa are from
the left: JW Swanepoel, University of the Free State,
Melissa van der Merwe, University of Pretoria,
Heinrich Jantjies, Stellenbosch University, and
Johann Boonzaaier, also from Stellenbosch University.
Photo: Supplied

The International Food and Agribusiness Management Association’s International Student Case Competition, in its 12th year, brings together students from around the world to demonstrate their investigative and problem-solving skills to provide innovative solutions to practical problems.

JW Swanepoel, a PhD student at the Centre for Sustainable Agriculture at the University of the Free State (UFS) was part of an advanced case study team, representing South African universities, who won IFAMA’s International Student Case Competition. Swanepoel also presented results from his PhD study at IFAMA’s conference in Miami, Florida, where the winners were announced.

Competition a global stage to showcase solutions
The competition provides a global stage for students and their associated universities to showcase the next generation of agribusiness leaders.

This year the featured agribusiness was Bayer Crop Science. Although this company managed to expand its global footprint through its Food Chain Partnership, it faced some challenges to expand in emerging economies through small-scale farmers. Being from the African continent, Swanepoel and his team not only understood Bayer’s unique challenge but could also pre-empt some of the potential problems faced by agribusinesses that wanted to grow their footprint in emerging economies. This provided them with a competitive advantage in going head-to-head with some of the best universities in the world such as Purdue, Wageningen, Michigan, Texas A & M and Santa Clara to mention just a few.

The South African team’s presentation “Selling Lindiwe’s story” told the story of a small-scale woman cassava farmer in Mozambique who, after the death of her husband, became the main breadwinner. The South African team indicated how Bayer could play a major role in not only selling chemicals to these farmers but even more importantly to change the stories of small-scale farmers like Lindiwe. They recommended a strategic partnership with AB InBev as the main buyer for the cassava produced by these small-scale farmers, as a cheaper beer base substitute. They also recommended a local partner (Value Chain Insights) that understood the political, social and economic environment of these countries to facilitate the relationships between Bayer and its small-scale farmers.

Understanding the challenge a competitive advantage
According to the panel of judges, the innovative approach and motivations for investing in strategic partnerships with AB InBev and Value Chain Insights went beyond financial benefits, to include corporate social responsibility and rural development. Lindiwe’s story was, however, the decisive factor. The South African team was the only team to put a face and a story to the often invisible small-scale farmers.

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