Long-lasting radiation shields may make super-Earths friendly for life

Study gives a new perspective on why our planet has managed to stay habitable for billions of years -- concluding it is almost certainly due, at least in part, to luck. The research suggests this may shorten the odds of finding life on so-called 'twin-Earths' in the Universe.

Astronomy’s newest 10-year plan focuses on alien Earths

Scientists Plan Private Mission to Hunt for Earths around Alpha Centauri