Planet the Sun: Jupiter is the largest, at 318 Earth masses, whereas Mercury is the smallest, at 0.055 Earth masses. The planets of the Solar System can be divided into categories based on their composition: An exoplanet (extrasolar planet) is a planet outside the Solar System. In early 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the pulsar PSR 1257+12. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. These pulsar planets are believed to have formed from the unusual remnants of the supernova that produced the
Gustav Holst of the work was given at The Old Vic, preceded by an introductory talk by Vaughan Williams. "The Times" praised Holst and his forces for "a most interesting and artistic performance of this very important work". After this success, Holst was disappointed the following year by the lukewarm reception of his choral work "The Cloud Messenger". He again went travelling, accepting an invitation from H. Balfour Gardiner to join him and the brothers Clifford and Arnold Bax in Spain. During this holiday Clifford Bax introduced Holst to astrology, an interest that later inspired his suite "The Planets". Holst cast his