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Spiral galaxies. Below is a list of notable spiral galaxies with their own articles. The classification column refers to the galaxy morphological classification used by astronomers to describe galaxy structure. Designation. Picture. Classification. Constellation. Apparent Magnitude. Comet Galaxy.
DesignationPictureClassificationConstellationS18.7S11Sa: pec sp13.4SAB (rs)cd9.1Halo stars may be acquired from small galaxies which fall into and merge with the spiral galaxy—for example, the Sagittarius Dwarf Spheroidal Galaxy is in the process of merging with the Milky Way and observations show that some stars in the halo of the Milky Way have been acquired from it.
Nov 19, 2018 · Spiral galaxies are twisted collections of stars and gas that often have beautiful shapes and are made up of hot young stars. Most of the galaxies that scientists have discovered so far are spiral ...
Jan 8, 2020 · Our Milky Way, for example, is a barred spiral galaxy. Spiral galaxies are the most common type of galaxies found throughout the Universe. Around 60% of the observable universe is comprised out of spiral galaxies. Spiral galaxies are mostly found in low-density regions, and very rarely at the center of galaxy clusters.
Spiral galaxies tend to be very easy to identify from other types of galaxy. They have a big bright spot in the middle, which we called the bulge – this is a big group of stars that are within close proximity of each other. Outside of this is the spiral, or the arms of the galaxy, which are typically spirally around the bulge in the center.
Apr 30, 2024 · Another notable example is the Whirlpool Galaxy, also known as M51. This galaxy is located about 23 million light-years away and is famous for its striking spiral arms and interactions with a smaller companion galaxy. The Whirlpool Galaxy is a prime example of a barred spiral galaxy, with a bar-shaped structure running through its central bulge.
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For example, one spiral galaxy passing another with a stronger gravitational pull could lose some of its material, become distorted, and morph into a new shape. Some, like gas-rich dwarf galaxies, may be new, formed by material pulled from such encounters. Or perhaps when galaxies collide, they create a larger, oddly shaped mashup.
