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Will we ever understand the nature of consciousness? Cleland, philosophy professor and co-investigator in the Center for Astrobiology at the University of Colorado Boulderģ. It is rich in organic molecules but very cold and has no liquid water if life exists on Titan, it will be very different from life on Earth.” And Titan is probably the most interesting place in the solar system to look for life. Europa is a water world where more complex forms of life may have evolved.

Jupiter’s moon Europa and Saturn’s moon Titan are more compelling places. It’s also possible that any surviving Martian microbes are rare and located in places that are difficult for a robotic lander to reach. If an alien life-form differs much from what we have here on Earth, it is going to be difficult to detect. “If there is abundant microbial life on Mars, I suspect that we will find it within 20 years-if it is enough like our form of life. When and where do you think we will find extraterrestrial life? Martin Rees, British cosmologist and astrophysicistĢ. Travel beyond the solar system is an enterprise for posthumans-organic or inorganic.” Within a few centuries they will have become a new species: the posthuman era will have begun. We should surely wish these pioneer settlers good luck in using all the cyborg techniques and biotech to adapt to alien environments. Nevertheless, I’d guess that by the next century, there will be groups of privately funded adventurers living on Mars and thereafter perhaps elsewhere in the solar system. We must address the world’s problems here. There’s nowhere else in the solar system that’s as comfortable as even the top of Everest or the South Pole. “I think it’s a dangerous delusion to envisage mass emigration from Earth. Does humanity have a future beyond Earth?