Milky Way Galaxy - Star populations and movement: The concept of different populations of stars has undergone considerable change over the last several decades. Before the 1940s, astronomers were aware of differences between stars and had largely account
The Milky Way is the galaxy that contains our Solar System.[1][2][3][nb 1] This name derives from its appearance as a dim "milky" glowing band arching across the night sky, in which the naked eye cannot distinguish individual stars. The term "Milky Way" is a translation of the Clas...
The original discovery of the Milky Way’s ‘plane of satellites’ (then just five galaxies)1preceded the advent of theΛcold dark matter (ΛCDM) model, whereΛis the cosmological constant, as the paradigm for galaxy and structure formation2. A keyΛCDM prediction is that galaxies such as ...
Milky Way,the galaxy of which the sun and solar system are a part, seen as a broad band of light arching across the night sky from horizon to horizon; if not blocked by the horizon, it would be seen as a circle around the entire sky. Although its motion is not readily apparent, the...
"It is notoriously difficult to determine distances from the Sun to parts of the Milky Way's outer gas disc without having a clear idea of what that disc actually looks like," study lead author Chen Xiaodian from the research team of Chinese Academy of Sciences explained. ...
(Phys.org) —NASA's Hubble Space Telescope has revealed the first visual evidence of how our home galaxy, the Milky Way, assembled itself into the majestic pinwheel of stars we see today.
Porphyrion’s massive jets extend in polar directions from a supermassive black hole that lays in the center of a galaxy about 10 times the size of the Milky Way roughly 7.5 billion light-years from Earth. These deluges of energy extend around 40 percent further than the previous largest-kno...
The thickness of the dust deflects visible light (as is explainedhere) but infrared light can pass through the dust, which makes infrared telescopes like theSpitzer Space Telescopeextremely valuable tools in mapping and studying the galaxy. Spitzer can peer through the dust to give us extraordinari...
“Vast is this Milky Way, Making a brilliant figure in the sky.” The Persian astronomer Al Biruni (973-1048 A.D.) quoted from a Sanskrit tradition that it was Akash Ganga, the Bed of the Ganges; but his other Hindu title, Kshira, is not explained. In North India it was Bhagwan ...
the researchers found that the peanut-shaped bulge is explained by gravitational interactions that pushed stars out of the normal plane of the galaxy — interactions that predate the formation of the bar itself, whereas the stars housed in the disc-shaped bulge likely formed after the bar appeared...