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Enormous Lyα nebulae (ELANe) represent the extrema of Lyα nebulosities. They have detected extents of >200 kpc in Lyα and Ly… Expand THE YEAR 1783 HAS A FIRM PLACE IN HISTORY BOOKS and chronologies of human achievements. It was June 4, 1783, when the brothers… Expand Abstract A total of 56 non-porphyritic pyroxene and pyroxene/olivine micro-objects from different unequilibrated ordinary… Expand 66 NOTES AND NEW TECHNIQUES GEMS & GEMOLOGY SPRING 2002 colored strands marketed today may include a mix of cultured pearls from… Expand ABSTRACT We present an empirical calibration of nebular abundances based on the strongemission lines of [SII] and [SIII] in the… Expand NEWS A t a ceremony in Hawaii on 25–26 June, the Gemini North 8.1 metre telescope on Mauna Kea was formally inaugurated – the… Expand THE observable interactions of neutron stars with their local environment provide an opportunity for measuring the properties of… Expand A hydromagnetic dynamo provides the best mechanism for contemporaneously producing magnetic fields in a turbulent solar nebula… Expand A fast pulsar with period of 39.5 milliseconds has been discovered in the peculiar combination nebula CTB80. This nebula has been… Expand