https://twitter.com/realscientists/status/1528661012899037185I teach on three courses here at Bath:
https://twitter.com/realscientists/status/1528297286299701248I was born in South Africa, and grew up in Francistown, Botswana
https://twitter.com/realscientists/status/1445859435495178241'A Darkling Sea' by James Cambias is an interesting novel featuring a civilization in an exoplanetary subsurface ocean. Much recommended!
https://twitter.com/Hawaiianbrian33/status/1444390363372802051I'll start with the water. While the geology of Mars - dried-up riverbeds, deltas - suggests it likely had plenty of liquid water long ago, it currently has too thin atmosphere for liquid water to stably exist on its surface, regardless of temperature. We have to go underground!
https://twitter.com/realscientists/status/1444318317024583683Britannica defines astrobiology as a "multidisciplinary field dealing with the nature, existence, and search for extraterrestrial life" - practically spot on, but we should emphasize that for this, we study the evolution of life on Earth, extreme conditions it can survive...