UK Space Design Competition

This is a reliable source as Nature is a worldrenowned scientific journal, in which many of the scientific papers mentioned in the essay were originally published. The article was published in 2008, meaning that the information is up-to-date ● U.S National Library of Medicine. The Discovery of the Double Helix, 1951-1953. Available from: profiles.nlm.nih.gov/spotlight/sc/feature/double helix [Accessed 08/10/21] This is a reliable source as all content in the U.S National Library of Medicine is peer-reviewed and the webpage contains a vast array of scientific publications]