WebThere may be at least three types of active galaxies, including Seyfert galaxies, quasars, and blazars (although they may be the same type of galaxy view from different distances and perspectives). Seyfert Galaxy A Seyfert galaxy is an active spiral galaxy. Its nucleus (center) has bright emission lines, including visible wavelengths. Scientists sometimes categorize galaxies based on their shapes and physical features. Other classifications organize galaxies by the activity in their central regions – powered by a supersized black hole – and the angle at which we view them. See more Our Milky Way is one example of a broad class of galaxies defined by the presence of spiral arms. These galaxies resemble giant rotating … See more Elliptical galaxies have shapes that range from completely round to oval. They are less common than spiral galaxies. Unlike spirals, elliptical galaxies usually contain little gas and dust and show very little organization or … See more 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 … See more Lenticular galaxies are a kind of cross between spirals and ellipticals. They have the central bulge and disk common to spiral galaxies but no arms. But like ellipticals, lenticular … See more
What are the five types of galaxies? – KnowledgeBurrow.com
WebJul 13, 2024 · Some galaxies are spiral-shaped like ours. They have curved arms that make it look like a pinwheel. Other galaxies are smooth and oval shaped. They’re called elliptical galaxies. And there are also galaxies that aren’t spirals or ovals. They have irregular shapes and look like blobs. WebJan 8, 2024 · Key Facts & Summary. There are four main categories of galaxies: elliptical, spiral, barred spiral, and irregular. These... Spiral Galaxies. They have a flat, spinning disk with a central bulge surrounded … ravive health and vitality shelter island
List of galaxies - Wikipedia
WebJan 21, 2024 · The frequency of bulge-types strongly depends on galaxy mass. Bulgeless and pseudobulge galaxies are the most frequent types below stellar mass of 10 10 M ⊙. The majority of their galaxies above 10 10.5 M ⊙ are either ellipticals or classical bulges. WebMay 2, 2024 · Galaxies come in a wide variety of shapes and sizes. Like snowflakes, every galaxy is unique in its way. There are four different types of galaxies: spiral, elliptical, … WebFeb 7, 2008 · Their classification varies from E0 (circular) to E7 (most elliptical). Elliptical galaxies probably comprise about 60 percent of the galaxies in the universe. They show wide variation in size -- most are … ravi vishwanath role in hdfc ergo