Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.
Morning Overview on MSN
Red sky paradox: either we’re impossible, or aliens should be everywhere
Most stars in the cosmos are small, cool red dwarfs, yet the only intelligent life we know orbits a relatively rare yellow ...
The search for alien life often sparks the imagination with images of extraterrestrial beings and strange worlds. However, a new theory is shifting the focus—what if life elsewhere in the universe ...
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