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  2. Nebula (astrology platform) - Wikipedia

    en.wikipedia.org/wiki/Nebula_(astrology_platform)

    Nebula app was founded by Alex Fedorov, a CEO of Ukrainian startup OBRIO, in May 2019. [6] The first version of Nebula was released for iOS. [7] [8] [9] In July 2020, the Android version was presented. After seeing a great demand for personalized astrology content and psychic readings in a mobile application, Nebula team decided to expand to ...

  3. Orion Nebula - Wikipedia

    en.wikipedia.org/wiki/Orion_nebula

    The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula in the Milky Way situated south of Orion's Belt in the constellation of Orion, ...

  4. Herbig–Haro object - Wikipedia

    en.wikipedia.org/wiki/Herbig–Haro_object

    Both George Herbig and Guillermo Haro made independent observations of several of these objects in the Orion Nebula during the 1940s. Herbig also looked at Burnham's Nebula and found it displayed an unusual electromagnetic spectrum, with prominent emission lines of hydrogen, sulfur and oxygen. Haro found that all the objects of this type were ...

  5. Proplyd - Wikipedia

    en.wikipedia.org/wiki/Proplyd

    The proplyds in the Orion Nebula and other star-forming regions represent proto-planetary disks around low-mass stars being externally photoevaporated. These low-mass proplyds are usually found within 0.3 parsec (60,000 astronomical units ) of the massive OB star and the dusty proplyds have tails with a length of 0.1 to 0.2 parsec (20,000 to ...

  6. Nebula - Wikipedia

    en.wikipedia.org/wiki/Nebula

    The Westbrook Nebula, a protoplanetary nebula. A protoplanetary nebula or preplanetary nebula [ 27 ] (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star 's rapid evolution between the late asymptotic giant branch (LAGB) [a] phase and the subsequent planetary nebula (PN) phase.

  7. Angular diameter - Wikipedia

    en.wikipedia.org/wiki/Angular_diameter

    Carina Nebula: 2° by 2° Note: brightest nebula in the night sky, 1.0 apparent magnitude (V) North America Nebula: 2° by 100 ′ Earth in the Moon's sky: 2° - 1°48 ′ [12] Appearing about three to four times larger than the Moon in Earth's sky The Sun in the sky of Mercury: 1.15° - 1.76° [13] Orion Nebula: 1°5 ′ by 1°

  8. Messier 43 - Wikipedia

    en.wikipedia.org/wiki/Messier_43

    Messier 43 or M43, also known as De Mairan's Nebula and NGC 1982, is a star-forming nebula with a prominent H II region in the equatorial constellation of Orion. It was discovered by the French scientist Jean-Jacques d'Ortous de Mairan some time before 1731, [ 3 ] then catalogued by Charles Messier in 1769.

  9. Orion (constellation) - Wikipedia

    en.wikipedia.org/wiki/Orion_(constellation)

    Another fairly bright nebula in Orion is NGC 1999, also close to the Great Orion Nebula. It has an integrated magnitude of 10.5 and is 1500 light-years from Earth. The variable star V380 Orionis is embedded in NGC 1999. [21] Another famous nebula is IC 434, the Horsehead Nebula, near ζ Orionis. It contains a dark dust cloud whose shape gives ...