It is unsafe to deny the existence of things merely because we can not
see them. Here is what Prof. Simon Newcomb says of invisible stars:
The theories of modern science converge toward the view that,
in the pure ether of space no single ray of light can ever be
lost, no matter how far it may travel. During the last few years
discoveries of dark, and therefore invisible, stars have been
made by means of the spectroscope with a success which would
have been quite incredible a very few years ago, and which even
to-day must excite wonder and admiration. The general conclusion
is that, besides the shining stars which exist in space, there
may be any number of dark ones, forever invisible in our
telescope.--_Harper’s Magazine._
(3339)