Yes. However, the current rate of star creation is less than when the galaxies were younger.
Yes. However, the current rate of star creation is less than when the galaxies were younger.
Yes. However, the current rate of star creation is less than when the galaxies were younger.
Yes. However, the current rate of star creation is less than when the galaxies were younger.
There are generally three types of galaxies: spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral galaxies like the Milky Way have a disk shape with arms of stars spiraling out from a central core. Elliptical galaxies are shaped like ellipses and contain mostly older stars. Irregular galaxies have a less defined shape and tend to have a mix of young and old stars.
Because of their age, elliptical galaxies are believed to have older stars and less gas and dust in their insterstellar medium than other types of galaxies, and thus their nebulae are less common. However, nebulae are presumed to exist in almost all galaxies; and some recent observations hint that the central black holes of elliptical galaxies may tend to preserve interstellar gas by preventing it from cooling enough for star formation.
Spiral galaxies tend to have blue colors due to the presence of young, hot stars that emit blue light. Elliptical galaxies, on the other hand, are typically redder in color because they contain older stars that emit more red light. This color contrast is a result of the different star formation histories and compositions of the two types of galaxies.
the elliptical galaxy has a round or oval shape the spiral galaxy has a hurricane shape The origin of these different shapes would lie in the particular momentum of the constituent stars at the time they first coalesced into a galaxy under their mutual gravitational attraction.
It doesn't really work that way. The types aren't exactly related to size, but rather to shapes. Dwarf galaxies of course are the smallest; but other than that, a spiral galaxy can come in different sizes; so can an irregular galaxy or an elliptical galaxy.
Galaxies are classified based on their shape and structure. The main types of galaxies are spiral, elliptical, and irregular. Spiral galaxies have distinct arms of stars, elliptical galaxies are more oval-shaped with older stars, and irregular galaxies have a less defined shape.
You can also distinguish them by the types of stars - older stars versus younger stars, and stars of different "metallicity".
The concentration of stars is typically more centrally located in elliptical galaxies compared to spiral galaxies. Elliptical galaxies have a more concentrated spheroidal shape with stars distributed densely in the center, while spiral galaxies have a more spread-out disk structure with stars distributed along spiral arms.
Spiral,elliptical,and irregular galaxies
There are generally three types of galaxies: spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral galaxies like the Milky Way have a disk shape with arms of stars spiraling out from a central core. Elliptical galaxies are shaped like ellipses and contain mostly older stars. Irregular galaxies have a less defined shape and tend to have a mix of young and old stars.
Because of their age, elliptical galaxies are believed to have older stars and less gas and dust in their insterstellar medium than other types of galaxies, and thus their nebulae are less common. However, nebulae are presumed to exist in almost all galaxies; and some recent observations hint that the central black holes of elliptical galaxies may tend to preserve interstellar gas by preventing it from cooling enough for star formation.
The three different types of galaxies are the Spiral galaxy, the Elliptical galaxy, and the Irregular galaxy. Spiral galaxies are obviously in the shape of a spiral, elliptical galaxies are shaped as an ellipse, or a flat circle, and irregular galaxies can be any shape.
Elliptical galaxies are large blob shaped galaxies that most galaxies will eventually look like. Elliptical galaxies are what happens when two or more large galaxies collide and coalesce.
elliptical
galaxie 1, 2, 3, 4 and 5
Stars come in a variety of types. Blue stars, which are very hot, tend to have shorter lifetimes than red stars, which are cooler. Regions of galaxies where stars are currently forming are therefore bluer than regions where there has been no recent star formation. Spiral galaxies seem to have a lot of gas and dust, while elliptical galaxies have very little gas or dust.
Spiral galaxies, barred spiral galaxies, elliptical galaxies, and irregular galaxies