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‘We wanted to create a discipline’

Dr. Bernie Faranoff smiling and standing in front of an array of satellite dishes in South Africa, with a blue sky above him.

Bernie Fanaroff, at part of the Square Kilometre Array in Carnavon, South Africa, worked to ensure that Black African students had opportunities to become radioastronomers. Credit: Jaco Marais/Foto24/Gallo Images/Getty

Radioastronomy in Africa

In 2005, when South Africa and its partner countries in Africa submitted a proposal to host the world’s largest radio telescope, called the Square Kilometre Array, the continent had five radioastronomers, all based in South Africa. That year, the country embarked on a targeted human-capital development programme to develop talent needed to build, operate and use radio telescopes, which collect radio signals emitted by celestial objects. Marking its 20th anniversary this year, the government-funded programme has created 5 research-chair positions and more than 1,370 scholarships for undergraduate, master’s, doctoral and postdoctoral studies — at a total cost of about 500 million rand (US$28 million).

Now, the Square Kilometre Array (SKA) is under construction. It will have more than 100,000 tree-like antennas in Australia and almost 200 dish antennas in South Africa. South Africa owns and operates several radio telescopes, and there are hundreds of radioastronomers and students at universities and institutions in African countries.

Nature’s careers team spoke to officials and scientists working to grow Africa’s radioastronomy capacity, in part through the South African Radio Astronomy Observatory. In the first of a short series of articles investigating the growth of the discipline on the continent, Bernie Fanaroff, who led South Africa’s SKA bid, describes how a relatively small amount of money can create a critical mass of internationally competitive researchers.

When we threw our hat in the ring to host the Square Kilometre Array (SKA), we knew that we had to be very focused in how we spent our money. One of the conditions for government support for the bid, both from the South African government and from the African Union heads of state, was human-capital development on the continent. Back then, there were a handful of radioastronomers in Africa. We wanted to create a discipline here.

In the first year, we had about 40 million rand (US$2 million) to start developing the skills to build and use a pathfinder telescope to show that South Africa had the capability to host the SKA. We did not want to spread the money too thinly and were strict about which projects qualified for support. We started to get very good people, but there weren’t enough Black or female students entering the programme for there to be any kind of transformation at the graduate level. Black people account for more than 80% of the South African population but, historically, astronomers in South Africa were white men. We wanted to change that.

In response, we extended our development programme to undergraduate students, but we still struggled to attract Black and female candidates, and so we went further back, to secondary schools. For example, although our scholarship programme offers preferential access to students from the Karoo, the region in South Africa where the telescopes are based, pupils there struggled to meet the university entrance requirements for science and mathematics. So, we relocated specialist secondary-school teachers to the area to create an end-to-end process.

There’s a whole pool of young people out there who are extremely capable but have not had an opportunity to get into science. There are real social and economic barriers for women and for Black students in South Africa.

You can’t expect diverse candidates to appear out of nowhere. You have got to go and look for these people, find them and recognize that, given the circumstances, they have immense promise. Then, you have to take a chance on that person.

If you come from an under-resourced school or previously disadvantaged area, it is difficult to negotiate university — an entirely new environment. Students might have real gaps in their basic learning, but it’s not only that. They often don’t have the confidence, the study skills or the knowledge of university bureaucracy to succeed. A 2019 government study1 found that three out of five less-privileged South African students do not complete their university studies.

Students have got to feel that there’s somebody there, even just as a psychological mentor. Kim Anthony, head of human-capital development for the South African Radio Astronomy Observatory in Cape Town, and her team have been very hands-on and made a huge difference by simply caring about these students.

We also required universities to show that they had the appropriate people to mentor students. Initially, there were not enough supervisors for the growing pool of students, so we funded five research-chair positions and some mid-career positions, with funds for students, postdocs and start-up costs. That’s been very successful.

Planting the seeds of astronomy

South Africa’s 64-dish MeerKAT telescope, inaugurated in 2018, demonstrated that the country was becoming a hub for advanced radioastronomy, technology and science. MeerKAT, which is one of the most sensitive radio telescopes in the world, will eventually be absorbed into the SKA. It attracted world-leading researchers in science and engineering, and our young people now have access to this telescope and that international expertise.

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