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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

Year-long programme to celebrate the story of life and survival
2009-02-13

 
At the launch of the UFS's year-long programme to celebrate the story of life and survival were, from the left: Prof. Schalk Louw, Department of Zoology and Entomology, Prof. Jo van As, Department of Zoology and Entomology, Prof. Maitland Seaman, Centre for Environmental Management, and Prof. Matie Hoffman, Department of Physics. All four are associated with the UFS.
Photo: Hannes Pieterse

A year-long programme to celebrate the 200th anniversary of the birth of Charles Darwin and the 150th anniversary of the publication of his scientifically important book “The Origin of Species” was launched yesterday (the birth date of Darwin) by the University of the Free State (UFS) on its Main Campus in Bloemfontein.

The UFS is the only university in the country that is presenting such an extensive programme on life and survival. Yesterday’s launch programme entailed a portrayal of the life of Darwin and a presentation on what nature tells us about cosmic history. It was the start of a year-long lecture programme in which various departments at the UFS will take part.

“The lecture programme, called “The story of life and survival”, forms a cycle of the progress of man and does not only focus on Darwin. The programme aims to portray the influence of Darwin’s theory of evolution on a wide range of disciplines. We see this as a good opportunity to promote science in its broadest context,” says Prof. Jo Van As, head of the Department of Zoology and Entomology at the UFS.

The lecture programme will include topics such as the geological evolution of our planet, extinction, Darwinian agriculture, the road to civilisation, the proliferation of technology and communication, human demography and the human impact on the environment. It will be concluded in February 2010 with a lecture on the future of evolution.

The programme is spearheaded by the Department of Zoology and Entomology at the UFS, in conjunction with the National Museum and the Central University of Technology.

“Today evolution is no longer considered to be a theory and is widely accepted by most serious scientists as the process responsible for the diversity of life on our planet,” says Prof. Van As.

Complete programme:

26 February 2009: The geological evolution of our planet
13 March 2009: Origin of life, prokaryotes and eukaryotes
24 March 2009: Extinction
16 April 2009: Evolution and biodiversity of plants
30 April 2009: Evolution and biodiversity of animals
14 May 2009: The mechanisms of evolution: Heredity and Natural Selection
28 May 2009: Origin of humankind
4 June 2009: Darwinian agriculture
30 July 2009: Road to civilisation
6 August 2009: Human demography
20 August 2009: Proliferation of technology and communication
10 September 2009: Human impact: On the environment
8 October 2009: Human impact: Resistance, ectoparasites, HIV/Aids, antibiotics
22 October 2009: How to care for the world
12 February 2009: The future of evolution

Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
13 February 2009

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