Irregular galaxy - Wikipedia
Irregular galaxies are commonly small, about one tenth the mass of the Milky Way galaxy, though there are also unusual cases of large irregulars like UGC 6697. Due to their small sizes, they are prone to environmental effects like colliding with large galaxies and intergalactic clouds.
Irregular Galaxy: Definition, Types, Shape, Facts - Telescope ...
19 小时之前 · Irregular galaxies are smaller in size compared to other galaxy types, with diameters ranging from 5,000 to 30,000 light-years. Irregular galaxies comprise a quarter of all galaxies in the universe. The prevalence of irregular galaxies makes them a subject of study for astronomers seeking to understand galaxy formation and evolution.
Galaxy - Irregular, Star Clusters, Nebulae | Britannica
6 天之前 · Galaxy - Irregular, Star Clusters, Nebulae: Most representatives of this class consist of grainy, highly irregular assemblages of luminous areas. They have neither noticeable symmetry nor an obvious central nucleus, and they are generally bluer in colour than are the arms and disks of spiral galaxies.
Galaxy Types - Science@NASA
Irregular galaxies have unusual shapes, like toothpicks, rings, or even little groupings of stars. They range from dwarf irregular galaxies with 100 million times the Sun’s mass to large ones weighing 10 billion solar masses.
Galaxy - Elliptical, Spiral, Irregular | Britannica
6 天之前 · Several S0 galaxies are otherwise peculiar, and it is difficult to classify them with certainty. They can be thought of as peculiar irregular galaxies (i.e., Irr II galaxies) or simply as some of the 1 or 2 percent of galaxies that do not fit easily into the Hubble scheme.
Irregular Galaxies - Ask An Earth and Space Scientist
Irregular galaxies are the most unusual of galaxies. They don’t seem to fit into either the spiral or elliptical galaxy categories. They don’t have nice spiral arms, but they do have dark patches of gas and dust.
What is an irregular galaxy? | Cool Cosmos
What is an irregular galaxy? Irregular galaxies have no particular shape. They are among the smallest galaxies and are full of gas and dust. Having a lot of gas and dust means that these galaxies have a lot of star formation going on within them. This can make them very bright.