Поиск по: -
Поискать по всем серверам
На этой странице приведены все страницы, которые ссылаются на http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BEAC7F5D3-DD63-4751-9D1C-1395F96FAAA5%7D. Показаны документы 1 - 1 из 1.
1. The deep sky | Astronomy.com
... Star Atlas . ... stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Three major types of deep-sky objects are nebulae, star clusters, and galaxies. ... M16 is actually a double object, a star cluster (NGC 6611) and a famous nebula known as the Eagle Nebula (IC 4703). ... As with star clusters, clusters of galaxies are held together by mutual gravitational attraction. ...
[
Сохраненная копия
]
Ссылки http://www.astronomy.com/observing/tour-the-deep-sky/2010/03/the-deep-sky -- 105.7 Кб -- 10.04.2016
Похожие документы
Похожие документы