Although this article doesn't make it clear, the underlying concepts (like the light slingshot / "halo drive") are explored in more detail in a previous article

Although this article doesn't make it clear, the underlying concepts (like the light slingshot / "halo drive") are explored in more detail in a previous article: https://www.centauri-dreams.org/2019/03/05/investigating-the-halo-drive/ https://www.centauri-dreams.org/2019/03/05/investigating-the...