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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。Interesting fact: In the southern latitudes, the viewing situations in the Milky Way are far better. There, the Milky Way all night long in Winter season months once the nights are lengthier and darker.
Populace I stars include more large components than globular cluster and halo stars, are generally younger and found in the disk, and so are especially concentrated while in the spiral arms. The Solar is really a member of populace I.
We've only begun to examine the billions of planets it harbors. The habits of Sagittarius A*, the processes driving star formation, and the ultimate fate with the galaxy remain active frontiers of investigation.
This observation implies which the Milky Way possesses only two significant stellar arms: the Perseus arm and the Scutum–Centaurus arm. The remainder of the arms include extra gas although not extra aged stars.[213] In December 2013, astronomers identified which the distribution of young stars and star-forming areas matches the 4-arm spiral description of the Milky Way.
We may use these stellar streams to reconstruct the development heritage of your Milky Way. To this point, we’ve uncovered 23 streams round the Milky Way but we predict there may very well be far more! Light from what was once a galaxy is currently unfold out into these skinny streams as opposed to becoming concentrated in one spot, so these streams can be exceptionally faint and canopy a big area of your sky.
Just one useful outcome is that the constellations we notice from Earth might improve as star orbits alter or new stars are extra in to the blend; that said, the collision is going on so far Sooner or later which the constellations we see right now may be altered in any scenario, because of pure starbirth and star death beyond the collision. This Milky Way timelapse exhibits how the evening sky will change as time passes.
Photograph in the "Great Andromeda Nebula" from 1899, afterwards recognized given that the Andromeda Galaxy In 1904, learning the appropriate motions of stars, Jacobus Kapteyn described that these มาวินเบท weren't random, as it had been considered in that time; stars may very well be divided into two streams, relocating in nearly opposite Instructions.
The main arms encompass the highest densities of both younger and aged stars; the slight arms are generally full of fuel and pockets of star-forming activity.
It could appear small from our point of view, nevertheless it’s a massive, sprawling entity which makes our solar process seem like a speck of dust. Enable’s just take a closer check out just how huge the Milky Way really is.
Rubin Observatory is going to be a robust Software to help scientists recognize and notice these streams, as it will impression your complete Southern Hemisphere sky much more deeply than ever before ahead of.
Knowledge from Gaia has become described as "transformational". It's been estimated that Gaia has expanded the volume of observations of stars from about 2 million stars as of the nineteen nineties to 2 billion.
Nebulae, sculpted by radiation and stellar winds, color the arms in brilliant pinks and purples. Supernovae punctuate this stellar tapestry with bursts of sunshine and Vitality, recycling hefty elements into House to kind potential generations of stars and planets.
Gaia data currently generates more study papers than even the well-known Hubble Space Telescope. Gaia will continue charting the galaxy until a minimum of 2025, so long as the spacecraft remains in superior health and fitness, plus the catalog it's compiled will preserve astronomers active for many years to come back.