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
Egdon Heath (Holst) Holst considered the work his most perfectly realised composition, an opinion shared by Ralph Vaughan Williams and others. But it has never had the profile of works such as "The Planets" and "St Paul's Suite". In 1934 Edwin Evans speculated on why the public had not yet shared the composer's assessment: Egdon Heath (Holst) Egdon Heath, Op. 47, H. 172, subtitled "A Homage to Thomas Hardy", is a tone poem by Gustav Holst, written in 1927. Holst considered it his most perfectly realised composition. Egdon Heath is a fictional place in the equally fictional region of Wessex in the south-west