Stability of the Solar System essentially the distance from sun to earth). These are now known as the Kirkwood gaps. Some asteroids were later discovered to orbit in these gaps, but their orbits are unstable and they will eventually break out of the resonance due to close encounters with a major planet. Another common form of resonance in the Solar System is spin–orbit resonance, where the period of spin (the time it takes the planet or moon to rotate once about its axis) has a simple numerical relationship with its orbital period. An example is our own Moon, which is in a 1:1 spin–orbit resonance
Imogen Holst by the cellist Steven Isserlis. In 1976, she took legal action over a recording by Japanese electronic composer Isao Tomita of 'The Planets', calling it 'unworthy of my father's creation'. The record, originally issued on the RCA label, was withdrawn from sale, and vinyl copies have subsequently become very rare. In April 1979 Holst was present when the Queen Mother opened the new Britten–Pears School building in Snape. The building included a new library—the Gustav Holst Library—to which Holst had donated a large amount of material, including books which her father had used in his own teaching career. She had