- Johann Joachim Quantz (Wikipedia)
Johann Joachim Quantz (German: [kvants]; 30 January 1697 – 12 July 1773) was a German composer, flutist and flute maker of the late Baroque period. Much of his professional career was spent in the court of Frederick the Great. Quantz composed hundreds of flute sonatas and concertos, and wrote On Playing the Flute, an influential treatise on flute performance. His works were known and appreciated by Bach, Haydn and Mozart.
- Pinwheel Galaxy (Wikipedia)
The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, unbarred, and counterclockwise spiral galaxy located 21 million light-years (6.4 megaparsecs) from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.