Kepler's laws of planetary motion | The Planetary Society | Planetary science | planetary science | Planetary Resources | planetary nebula | Wide Field and Planetary Camera | Planetary Science Decadal Survey | planetary geology | Planetary core | Planetary body | Lunar and Planetary Laboratory |
Enstatite is one of the few silicate minerals that have been observed in crystalline form outside our Solar System, particularly around evolved stars and Planetary Nebulae such as NGC 6302.
Current projects aim to investigate the nature of mass-loss via stellar winds in a broad range of astrophysical settings, including: the structure of fast outflows from the central stars of planetary nebulae, mass-loss, clumping and the origin of structure in the winds of luminous OB stars, accretion-disc outflows in cataclysmic variables and, the origin and nature of mass outflows from young classical T Tauri stars.
Copeland discovered thirty-five NGC objects, most of them with Lord Rosse's 72" reflector. Planetary nebulae were found by visual spectroscopy at Dun Echt and during an Andes expedition. Seven of the galaxies in the constellation Leo form the famous "Copeland Septet": NGC 3745, 3746, 3748, 3750, 3751, 3753, and 3754.