Infographic of the Day: How Galaxies are Classified by Typeastronomer edwin hubble
Size Looking at stars in the sky, they all appear to be points of light of the same size. Many stars are actually about the size of the sun. However, some stars are much larger than the sun. Most stars are smaller than the sun. Astronomers use the size of the sun to describe the ...
Galaxies are classified by their shape. Each type has different characteristics and a different history of evolution. Some, like the Milky Way, have arms spiraling outward around their center. Known as spiral galaxies, these groups make up most of the galaxies that astronomers can see. The gas...
So, how many galaxies are in the universe? In this article, we'll find out how galaxies were discovered and what types exist, what they're made of, their internal structures, how they form and evolve, how they're distributed across the universe, and how active galaxies might emit...
Hubble studied galaxies and classified them into various types of elliptical and spiral galaxies. The spiral galaxies were characterized by disk shapes with spiral arms. It stood to reason that because the Milky Way was disk-shaped and spiral galaxies were disk-shaped, the Milky Way was probably...
There's actually an in between category... where a few objects can be legitimately classified as either big globulars or small elliptical galaxies. And the expected long term fate would likely be a relatively whimpering wind-down to to a quasi-stable ball of extremely old stars... punctuated...
Recent observations suggest that many fundamental physical constants and conditions in our universe are fine-tuned for life to exist. This provides an important piece of evidence to support the Design Argument and the existence of God in the philosophy of religion. However, the proposal of multivers...
NASA’s satellites come in many different shapes and sizes, and are designed for a variety of purposes. Some, like the Hubble Space Telescope, were built to observe distant galaxies and help us better understand the universe. Our largest artificial satellite, theInternational Space Station, is an...
Minsley and collaborators found that within galaxies with active black holes, the ISM is warmer, the ratios of warm molecular gas to other coolants are larger, and other features from dust particles have a wider range of values than in galaxies where the black holes are dormant. ...
(1885–1972) calculated the size of the Milky Way galaxy and general location of its center. He argued that the objects known as "nebulae" lay within the galaxy, rather than outside of it, and incorrectly disagreed with Hubble's observations that the universe boasted galaxies other than the...