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_Astronomy版 - Bird's Eye View and Other Fresh Insights (2)
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1 (共1页)
s******o
发帖数: 298
1
Invisible corona
The stars of the Milky Way's main disk span a region of space about 100,000
light-years across, and the thick central bulge is a sphere about 25,000
light-years in diameter. To picture this, think of a typical sci-fi flying
saucer. For decades, this was the official picture of our galaxy. More
recently, a handful of studies have added a sprinkling of stars that live in
a sparse halo outside the main disk.
Then early this year, astronomers made a remarkable announcement: Our gala
1 (共1页)
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Galactic Merger[zz]Astronomy Picture of Day: Our Galaxy
The Milky Way Eats One of Its Own [zz]Summer Milky Way Ultra Wide Field
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