readersdigest.co.in 123photos: (clockw© getty images/chris & monique fallowise from left) © getty images/stocktrek images; s/nature picture
library; © getty images/aeriform; © picture alliance/dpa/jr tokai
SBarracuda, blue sharks and
Atlantic bluefin tuna can only rub
their eyes in astonishment when this
torpedo snatches their prey in the
water right from under their noses.
The sail fish can reach speeds of
110 kilometres per hour, making it
almost twice as fast as its competitors
and other speedy fish in the sea.WDanish astronomer Ole Rømer
recognized as far back as 1676
that light has a quantifiable speed.
With the help of Jupiter’s moons,
he calculated that it must be around
2,20,000 kilometres per second. Even
though his calculations were slightly
off, this was an astonishing achieve-
ment given the lack of technology at
his disposal. Light actually travels at
around 3,00,000 kilometres per second.
Nothing in the universe is faster.