planetary nebula
111Apparent magnitude — Asteroid 65 Cybele and 2 stars with their magnitudes labeled The apparent magnitude (m) of a celestial body is a measure of its brightness as seen by an observer on Earth, normalized to the value it would have in the absence of the atmosphere.… …
112Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… …
113NGC 6751 — A Hubble Space Telescope (HST) image of NGC 6751. Credit: HST/NASA/ESA. Observation data (Epoch J2000.0) Right as …
114Nebulosa Ojo de gato — Datos de observación …
115Кошачий Глаз — Туманность Кошачий Глаз Планетарная туманность История исследования Открыватель Уильям Гершель Дата открытия …
116Кошачий Глаз (туманность) — Туманность Кошачий Глаз Планетарная туманность История исследования Открыватель Уильям Гершель Дата открытия …
117NGC 5189 — image taken with the New Technology Telescope at ESO s La Silla Observatory. Observation data (Epoch J2000.0) Right ascension …
118Color–color diagram — In astronomy, color–color diagrams are a means of comparing the apparent magnitudes of stars at different wavelengths. Astronomers typically observe at narrow bands around certain wavelengths, and objects observed will have different brightnesses …
119Orion 1 and Orion 2 Space Observatories — The Orion 1 Space Observatory and Orion 2 Space Observatory were space observatories installed in spacecraft launched by the space program of the Soviet Union during the 1970s. Contents 1 Orion 1 1.1 Specifications 2 Orion 2 …
120Neutron star — redirects here. For the story by Larry Niven, see Neutron Star (short story). Neutron stars crush half a million times more mass than Earth into a sphere no larger than Manhattan. A neutron star is a type of stellar remnant that can result from… …
