  The 1927 discovery of the expansion of the Universe by Lemaitre was published
in French in a low-impact journal. In the 1931 high-impact English translation
of this article a critical equation was changed by omitting reference to what
is now known as the Hubble constant. That the section of the text of this paper
dealing with the expansion of the Universe was also deleted from that English
translation suggests a deliberate omission by the unknown translator.
