43. http://www.inasan.rssi.ru/~malkov/CEV/marginal.txt
... UU Sge is the nucleus of planetary nebula Abell 63 and thus post-CE binary. ... This shell, which is the remnant of a planetary nebula, confirms the evolutionary similarity of the system to other young pre ...
46. Обзоры препринтов astro-ph
... Authors: M.Bellazzini et al. astro-ph/0311087 Случайность и SDSS: открытие самой большой планетарной туманности (Serendipity and the SDSS: Discovery of the Largest Known Planetary Nebula on the Sky) . ...
47. Meade ETX, A Telescope For The Masses. - an Astronomy Net Article
... scroll keys on the Autostar told me further information about the Helix Nebula including its designation as NGC 7293, that it is a planetary nebula, that it is positionally at RA 22:29.6 and Dec. -20 deg. 48 min., that it is in the constellation Aquarius ...
48. Харон
... McKinnon, William B.; Mueller, Steve. Pluto's structure and composition suggest origin in the solar, not a planetary, nebula. Nature, vol. ...
49. А С Т Р О К У Р Ь Е Р
... Spectra of thousands of stars to 13th stellar magnitude, the first satellite UV spectrogram of a planetary nebula were obtained revealing spectral lines of aluminum and titanium – elements not previously observed in planetary nebulae, two-photon emission ...