Astronomy Picture of the Day
Discover the cosmos! Each day we feature a different image or photograph
of our fascinating universe, along with a brief explanation written by a
November 18, 1995
Water (Dihydrogen Oxide, H2O) is a truly
remarkable chemical compound and is fundamental to life on
Earth is the only planet in the
Solar System where
the surface temperature and pressure allow
the three forms of water, solid (ice),
and gas (water vapor condensing in clouds)
to exist simultaneously on its surface.
Water in one of these forms accounts for everything visible
in this view of
Earth from space looking north
at the Bering Sea and the coast of
Alaska, USA, around Bristol Bay.
Tomorrow's picture: New York at Night
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