From Jody Wear, New Minas, Nova Scotia, Canada
Because of space tourism, there has been much talk lately of what constitutes being in outer space (31 July, p 16). Many definitions are strictly technical and scientific in nature. Perhaps a more philosophical position should be considered.
Let us apply the distinction between object and subject – that is, when would you feel you are in outer space? I suggest that at about 12,742 kilometres (one Earth diameter) away, the planet would be truly other and set off nicely against the background of space. I can’t, however, afford to test my hypothesis.
