世界各地有許多創造天地的神話圍繞著銀河系發展出來。很特別的是，在希臘就有兩個相似的希臘神話故事在解釋銀河是怎麼來的。有些神話將銀河和星座結合在一起，認為成群牛隻的乳液將深藍色的天空染白了。在東亞，人們相信在天空中群星間的霧狀帶是銀色的河流，也就是所謂天河。
Astonishing 'halo' of high-energy particles around big galaxy cluster is actually a glimpse into your early universe
Two surveys of near-infrared light, which happens to be sensitive mostly to crimson giants rather than impacted by dust extinction, detected the predicted overabundance during the Scutum–Centaurus arm but not while in the Carina–Sagittarius arm: the Scutum–Centaurus Arm consists of about thirty% extra pink giants than will be predicted from the absence of a spiral arm.[216][219]
The spiral arms while in the Whirlpool Galaxy have been thought to are already fashioned from the collision of a close-by galaxy. Would not or not it's odd in the event you grew new arms whenever you collided into some thing?
This observation suggests which the Milky Way possesses only two main stellar arms: the Perseus arm and also the Scutum–Centaurus arm. The remainder of the arms incorporate excessive gas but not extra outdated stars.[213] In December 2013, astronomers uncovered the distribution of young stars and star-forming areas matches the 4-arm spiral description of the Milky Way.
Stars within the disk orbit across the galactic Centre, forming swirling streams that look to emanate like arms through the galactic bulge. Exploration in to the mechanisms that drive the generation of spiral arms is still in its infancy, but the latest experiments counsel that these arms variety and disperse inside reasonably short periods of as many as one hundred million several years (out from the galaxy's thirteen billion years of evolution).
In astronomical practice, the delineation of your galactic quadrants is based on the galactic coordinate process, which sites the Sun because the origin in the mapping procedure.[115]
The short story is There exists minimal to worry about; the extended tale is the process is an interesting a single because it reveals how galaxies could evolve.
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The halo also holds streams of stars—the continues to be of dwarf galaxies torn aside by tidal forces because the Milky Way absorbed them.
The celebrities with the Milky Way mawinbet are as varied as They're a lot of. The smallest, red dwarfs, are dim and funky, burning their fuel so slowly but surely that they'll outlive each individual other kind of star, shining for trillions of several years.
Details from Gaia is referred to as "transformational". It has been estimated that Gaia has expanded the number of observations of stars from about two million stars as of your nineteen nineties to two billion.
A diagram with the Sunlight's locale while in the Milky Way; the angles symbolize longitudes during the galactic coordinate system A galactic quadrant, or quadrant with the Milky Way, refers to one of four round sectors from the division with the Milky Way.
On a single facet of the debate, Shapley considered the Milky Way was much larger than previous estimates and that we were not at the middle. He also claimed that "spiral nebulae" such as Andromeda had been a Element of the Milky Way.