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Directory of featured pictures. ... The Day the Earth Smiled, by NASA/JPL/Space Science Institute. ... Galaxies and intergalactic space
A wide field view of outer space as seen from Earth's surface at night. The interplanetary dust cloud is visible as the horizontal band of zodiacal light, including the false dawn [29] (edges) and gegenschein (center), which is visually crossed by the Milky Way. Outer space is the closest known approximation to a perfect vacuum.
Types of galaxies according to the Hubble classification scheme : an E indicates a type of elliptical galaxy; an S is a spiral; and SB is a barred spiral galaxy. Galaxies come in three main types: ellipticals, spirals, and irregulars. A slightly more extensive description of galaxy types based on their appearance is given by the Hubble sequence.
List of galaxies; List of largest galaxies; List of galaxies with richest globular cluster systems; List of nearest galaxies; List of galaxies named after people; List of spiral galaxies; List of polar-ring galaxies; List of ring galaxies; List of quasars; Satellite galaxies. List of satellite galaxies of the Milky Way; List of Andromeda's ...
Galaxies have a variety of morphologies, with irregular, elliptical and disk-like shapes, depending on their formation and evolutionary histories, including interaction with other galaxies, which may lead to a merger. [4] Disc galaxies encompass lenticular and spiral galaxies with features, such as spiral arms and a distinct halo.
The James Webb Space Telescope is a space telescope operated by NASA and designed primarily to conduct infrared astronomy.Launched in December 2021, the spacecraft has been in a halo orbit around the second Sun–Earth Lagrange point (L 2), about 1.5 million kilometers (900,000 mi) from Earth, since January 2022.
Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
Astronomical pictures, like observational astronomy and photography from space exploration, show astronomical objects and phenomena in different colors and brightness, and often as composite images. This is done to highlight different features or reflect different conditions, and makes the note of these conditions necessary.