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The James Webb Space Telescope captured images of 19 spiral galaxies in near- and mid-infrared light. - NASA, ESA, CSA, STScI, Janice Lee (STScI), Thomas Williams (Oxford), PHANGS Team.
A flat, rotating disc of stars and interstellar matter of which spiral arms are prominent components. A central stellar bulge of mainly older stars, which resembles an elliptical galaxy. A bar-shaped distribution of stars. A near-spherical halo of stars, including many in globular clusters.
A spiral galaxy is a type of galaxy characterized by a central bulge of old Population II stars surrounded by a rotating disc of younger Population I stars. A spiral galaxy maintains its spiral arms due to density wave theory .
Messier 81. The HST 's view of M81, with its open star clusters, globular star clusters, and regions of fluorescent gas. Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D 25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years ).
Whirlpool Galaxy. The Whirlpool Galaxy, also known as Messier 51a ( M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. [6] [7] [8] It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. [9]
Andromeda Galaxy. A visible light image of the Andromeda Galaxy. Messier 32 is to the left of the galactic nucleus and Messier 110 is at the bottom right. The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224.
Messier 100 (also known as NGC 4321 or the Mirror Galaxy) is a grand design intermediate spiral galaxy in the southern part of the mildly northern Coma Berenices. It is one of the brightest and largest galaxies in the Virgo Cluster and is approximately 55 million light-years from our galaxy, its diameter being 107,000 light years, and being about 60% as large.
NGC 4651 imaged by the Hubble Space Telescope. Spiral galaxy NGC 4651. Credit: ESA / Hubble Space Telescope & NASA, D. Leonard. NGC 4651 is a spiral galaxy located in the constellation of Coma Berenices that can be seen with amateur telescopes, at a distance not well determined that ranges from 35 million light years [2] to 72 million light years.