CapovaK.A. and PerssonE., editors. (forthcoming) Astrobiology and Society in Europe, A White Paper of the COST Action TD 1308. Origins and Evolution of Life on Earth and in the Universe. New York: Springer.
2.
McKayC.P. (1990)Does Mars have rights?. In Moral Expertise, edited by D. MacNiven, Routledge,. New York, pp 184–197.
3.
SmithK.C. (2016)The curious case of the Martian microbes: Mariomania, intrinsic value and the prime directive. In The Ethics of Space Exploration, edited by MilliganT. and SchwartzJ., Part of the Series Space and Society, New York: Springer, pp 195–208.
4.
SmithK.C. (2017) Hawking and the METI hawks: right for the wrong reasons. Theol Sci, 15:147–149.
5.
WallM. (2015) Signs of Life will be Found by 2025, NASA's Chief Scientist Says. Available online at www.space.com/29041-alien-life-evidence-by-2025-nasa.html
