Are we alone
in the Universe, or are there as many planets supporting life as there are
stars in the sky?
It’s one of
the most important and fascinating questions human beings can ponder, and
astrobiology is the emerging field of science that tries to answer it.
Rhodri Evans gives an expert overview of our current state of knowledge,
looking at how life started on Earth, considering other places in the Solar
System that might harbour life, then discussing possible Earth-like
‘exoplanets’ orbiting stars further out into our galaxy – and what future
missions and studies will tell us about extraterrestrial life there.
way the book answers some key questions: How can we answer Fermi’s paradox
(‘Where is everybody?’)? Is water essential for life, or just a best bet for
finding it? And how will we know when we find alien life, if it doesn’t follow
the same principles as Earth life?