This time around we’re looking skyward for todays topic and wondering what aliens would look like if they do exist. Have a listen to find out about what would be needed for life to evolve on another planet and what we might expect to see in the types of life that could be there. We’ve started a bit of a competition too so remember to vote for what your favourite fact was in our intro over on Instagram or Twitter.

Find us over on Twitter and Instagram @3_Zoologists to ask us questions or just tell us what you think. And if you want to learn more about anything we talk about in this episode check out the references below for more information:

1. The Zoologist’s Guide to the Galaxy – Dr Arik Kershenbaum (2020)

2. What We Know About Extraterrestrial Intelligence (Foundations of Xenology) – Michael Ashkenazi

3. Eight ingredients for life in space | Natural History Museum (nhm.ac.uk) (Accessed 02/02/2021)

4. NASA's Alternative Definition of Life - President's Dream Colloquium - Simon Fraser University (sfu.ca) (Accessed 02/02/2021)

5. Senter P. 2009. Vestigial skeletal structures in dinosaurs. Journal of Zoology. 280(1). p. 60-71.

6. Gingerich P. 1990. Hind Limbs of Eocene Basilosaurus: Evidence of Feet in Whales. Science. 249(4965). p. 154-157.

7. Brocks J. 2017. The rise of algae in Cryogenian oceans and the emergence of animals. Nature. 548.

8. Lauro S. 2021. Multiple subglacial water bodies below the south pole of Mars unveiled by new MARSIS data. Nature Astronomy. 5. p. 63-70