| BRAHE | Tycho ?, Danish astronomer who established the Uraniborg Observatory on the island of Hven (5) |
| TYCHO | Astronomer who established the Uraniborg Observatory in Denmark (5,5) |
| ISAAC | Forename of the GUS chairman and philanthropist who established the Wolfson Foundation in 1955 (5) |
| BRUHN | Erik ?, Danish dancer; director of the Swedish Opera Ballet from 1967-73 (5) |
| UTZON | Jorn ?, Danish architect who designed the Sydney Opera House (5) |
| BORGE | Victor ?, Danish pianist and comedian who died in 2000 (5) |
| BJORN | Thomas ?, Danish golfer; Omega European Masters winner in 2011 and 2013 (5) |
| MACH | Physicist who established the principles of supersonics and the ratio of the velocity of a body to the speed of sound (4) |
| ANDREWS | Surname of one of the designers of RMS Titanic; or, the chemist who established the concepts of crit |
| AZTEC | A member of a Mexican people who established a great empire centred on the Valley of Mexico (5) |
| CRECY | 1346 battle in northern France which established the English longbow as a dominant weapon on the battlefield (5) |
| DANES | Tycho Brahe and Niels Bohr, for two |
| EDWINHUBBLE | U.S. astronomer born in 1889 who established the existence of galaxies beyond the Milky Way (5,6) |
| SALIC | Relating to a tribe of Franks who established themselves along the Yssel river in the fourth century (5) |
| NOBEL | Swedish inventor of dynamite who promoted peace in his lifetime and, in his will, established the hi |
| VERYLARGEARRAY | Radio astronomy observatory on the Plains of San Agustin, New Mexico, officially renamed after Karl G Jansky in 2012 |
| TYCHOBRAHE | Danish astronomer who fixed stars' positions in the pre-telescope era (5,5) |
| GMT | Std. time designation at London's Royal Observatory on the 0 meridian |
| ROBERTOWEN | Welsh social and educational reformer who established the model community at New Lanark, the cradle of the co-operative movement |
| OLDHAM | Richard, Dublinborn seismologist who established the existence of the Earth's core (6) |
