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。
NSF can be an impartial federal agency made by Congress in 1950 to market the progress of science. NSF supports simple exploration and other people to produce information that transforms the future.
In Greek mythology, Zeus spots his son born to a mortal woman, the infant Heracles, on Hera's breast when she's asleep so the baby will drink her divine milk and grow to be immortal. Hera wakes up even though breastfeeding after which you can realizes she is nursing an unfamiliar baby: she pushes the newborn away, a few of her milk spills, and it produces the band of light generally known as the Milky Way.
Dutch astronomer Jan Oort, occasionally dubbed the grasp with the galactic system, was the very first to recognize that the Milky Way is not motionless but rotates, and he calculated speeds at which stars at different distances orbit throughout the galactic Centre.
《欽定古今圖書集成·曆象彙編·乾象典·天河部》，出自陳夢雷《古今圖書集成》
It obtained its title after the constellation Orion. Our locale within it truly is The key reason why why we see so many brilliant objects in the constellation Orion — we’re just thinking about our local spiral arm.
Someday, spacecraft might even leave the Milky Way, turning back to provide humanity its 1st legitimate portrait of our cosmic property.
Making use of Gaia knowledge, experts uncovered that these collisions activated intervals of powerful star formation while in the Milky Way and may even have something to perform Using the galaxy's trademark spiral form. The analyze suggests that our Solar was born for the duration of a type of intervals some 4.six billion years mawinbet in the past.
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The Sunshine revolves absolutely round the galactic center in about 225 million years (a galactic 12 months). The mass on the Galaxy is often determined by measuring the orbital velocities of stars and interstellar make a difference.
When this galaxy was 1st found out, it was thought for being a nebula. It's not; it's a galaxy. It can be also called Messier one zero one, because it was the 101st Messier object to become cataloged.
The Milky Way Galaxy is made up of a skinny disk made up of dust, fuel, and young and old stars; a spherical halo that contains populations of quite old stars, and globular star clusters; a thick, additional diffuse disk with stars that have Qualities intermediate involving All those in The skinny disk plus the halo; a peanut-shaped nuclear bulge of typically aged stars within the center; along with a supermassive black hole for the very Centre. The Sunshine is situated approximately halfway out on the Milky Way.
Because the time of the dinosaurs, we have accomplished only a single lap. Civilization by itself has lasted lower than a blink in galactic time. The Milky Way is not simply a spot we are in—it's an enduring, historic residence which includes existed extended before people and may carry on long immediately after we are absent.
This came like a shock: As outlined by conventional cosmology, satellite galaxies must form in darkish make any difference halos, and they ought to be widely distributed and relocating in random directions. This discrepancy remains not spelled out.[289]