We do not know exactly when glass was first made, but the time is set by historians as between ten thousand years before the Christian era. Catgut is cord of great toughness prepared from the intestines of certain animals, principally sheep. The cord is used for the strings of misical instruments and tennis rackets. There is no evidence that cats were ever used for making the cord. Almost everybody likes to talk, but some people can express themselves better than others because they are well informed on a wide range of subjects.
Alpha is the first letter of the Greek alphabet, and omega is the last.
The performance of astronomical telescopes is subject to interference from atmospheric conditions. To avoid as much of this interference as possible, observatories have been built as high above sea level as possible. The queen of Sheba, so the story goes, decided to test the wisdom of King Solomon. She held two wreaths at some distance from Solomon. The queen wished Solomon to choose the natural wreath.