What is the fine-grained topic of the following text: The Symposium 'The Magnetospheres of the Earth and Jupiter' (May 28th-June 1st, 1974 in Frascati) was organized by the 'Laboratorio Plasma Spazio' of the CNR, on the occasion of its moving to the Frascati area. Only return the topic.
The Magnetospheres of the Earth and Jupiter Symposium