From Chris Bond
There has been a lot of talk recently of the need for a mysterious “dark energy” to explain the way that galaxies are moving apart (6 April, p 23, and 13 April, p 7). However, I believe that this movement can be explained by assuming that the Universe is spinning. The centrifugal force would move the galaxies apart. Although we, inside the Universe, do not have a point of reference from which to observe this spinning motion, this is no reason to assume that it is not spinning.
Henley-on-Thames, Oxfordshire
