WebThere have been two main types of galaxy formation models to explain all those observations. The first asserts that massive elliptical galaxies formed in a single, rapid collapse of gas and dark matter, during which virtually all the gas was turned quickly into stars. Afterward the galaxies changed only slowly as the stars evolved. WebDistant galaxies, seen as they were when the Universe was younger, tend to be smaller (in size) and less massive (they contain less stuff) than nearby galaxies. They also tend to be bluer and have stronger indications of ongoing and recent star formation than nearby galaxies have. We also see that the shapes of galaxies has changed over time ...
[astro-ph/0109358] The Morphological Evolution of Galaxies
Elliptical galaxies (most notably supergiant ellipticals, such as ESO 306-17) are among some of the largest known thus far. Their stars are on orbits that are randomly oriented within the galaxy (i.e. they are not rotating like disk galaxies). A distinguishing feature of elliptical galaxies is that the velocity of the stars does not necessarily contribute to flattening of the galaxy, such as in spiral galaxies… WebIt only looks red because the star is moving away so the wave lengths are stretched out, or red-shifted. The blue spiral galaxy is blue because the color of the galaxy itself is blue. It … list songs by the group switch
Galaxies Change over Time, Morph into Different Shapes - softpedia
Web16 jan. 2024 · 1. Galaxies are constantly evolving with time, and one manner that they do this is that they change their rotation. This is apparent from the knowledge we have of … Web27 aug. 2015 · “A large proportion of galaxies have undergone a major ‘metamorphosis’ since they were initially formed after the Big Bang,” the researchers write in a report … Web1 okt. 1994 · By the time the universe had expanded to one fifth its present size, the stars had formed groups recognizable as young galaxies. When the universe was half its present size, nuclear reactions... impact journals期刊