Daly, N. (2017, August). Carl Sagan. Retrieved from National Geographic: https://www.nationalgeographic.com/magazine/2017/08/explore-space-carl-sagan-mars-martian-archive/
This article covers a few of the interviews with Carl Sagan, and explains what he thinks martian lifeforms would look like and why. It also has a photo of his discription, which was approved by Carl Sagan himself. The article closes with them discussing Sagan’s view of the Mars expeditions and a quote from Sagan saying “Whatever the reason you’re on Mars is, I’m glad you’re there. And I wish I was with you.” (Daly, N.).
Kragh, H. (2019, November 5). Carl Sagan. Retrieved from Encyclopedia Britannica: https://www.britannica.com/biography/Carl-Sagan
This article discusses the life and death of Carl Sagan, going in depth with his upbringing and achievements. It touches upon his scientific pursuits and manages to bring up his humanitarianism and anti-nuclear warfare contributions as well. Would recommend for anyone who needs to do research into his life and accomplishments, but it is not written by him and therefore does not show you much of how he thinks.
Mullen, L. (2001, November 26). Dedication of the Carl Sagan Center. Retrieved from nasa.gov: https://solarsystem.nasa.gov/people/660/carl-sagan-1934-1996/
This website is from NASA, and as such gives an in-depth discussion of how he impacted the scientific community. A good resource for researching his scientific side of his life. Does not discuss his personal life much, so not great in that aspect.
Sagan, C. (1977). The Dragons of Eden. Penguin Random House LLC.
“The Dragons of Eden”, written by Carl Sagan, outlines how human intelligence may have evolved. It combines the use of biology, psychology, anthropology, computer science to describe how this may have occurred. The book is well written and a good source of information, as well as a good window into his mind. Although the book does not discuss much of his life, it is still a good resource when researching him.
Welsh, J. (2014, March 9). Neil deGrasse Tyson Describes His Life-Changing First Encounter With Carl Sagan. Retrieved from Buisness Insider: https://www.businessinsider.com/young-neil-degrasse-tyson-met-carl-sagan-2014-3
This article is on Carl Sagan’s impact on Neil deGrasse Tyson. It does not discuss much of Carl’s life but is a good source when trying to find similarities between them. Would recommend if you decide to study Carl Sagan, however, because it shows you a small portion of the impact he’s had on the people of the world, not just the science.