Our four-limbed, one-headed body is just right for living on Earth. But what changes might the low-gravity, radiation saturated environment of space bring to our species? Lewis Dartnell finds the answers.

Life on other worlds will develop strange, unfamiliar and novel solutions to common evolutionary problems, writes astrobiologist Lewis Dartnell.

Could planets made of diamond and iron exist? While hundreds of exoplanets have already been discovered, astrobiologist Lewis Dartnell reckons it’s just a matter of time before we find the truly bizarre ones.