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World
It may be larger than Earth, but this exoplanet is situated firmly within its star's habitable zone - and it's been there for a while.
io9
 | Space
July 26, 2015
World
The astronomers say it's possible that the star was visible to our palaeolithic ancestors for a few minutes of hours if this rare flaring event transpired at the time.
IO9
 | Space
February 19, 2015
Lebanon, Africa
Its weight is estimated at a daunting 1,650 tons. Obviously, they wonder by what means the Roman builders had to transport it.
IO9
 | Archaeology
December 01, 2014