“It’s in the ‘sweet spot’, the Goldilocks Zone…”
If no-one picks up the phone at Gliese 581d, perhaps someone will be at home on the newly discovered Gliese 581g… aka the “Goldilocks” planet. Or, indeed, one of the other exo-planets in the, apparently, increasingly populated Gliese 581 system. But I tend to agree with the quotes in the level-headed Tom Chivers blog at the Daily Telegraph Dr Lewis Dartnell, a UCL astrobiologist who specialises in the possibility of microbial life on Mars, says that it’s “undeniably very, very exciting”, but it’s …