For a number of other galaxies, astronomers can circumvent the dark-matter problem by observing how a galaxy bends the light of more distant galaxies.
对于一些别的星系，天文学家可以通过观测星系怎样扭曲更远的星系发出的光来规避暗物质的问题。
The problem is dwarf galaxies are not as dense as the cold dark matter model says they should be.
问题在于矮星系并没有它们本应具有的冷暗物质的密度。
The problem is that dwarf galaxies are not as dense as the cold dark matter model says they should be.
问题在于矮星系并没有它们本应具有的冷暗物质的密度。
The problem is that dwarf galaxies are not as dense as the cold dark matter model says they should be.
问题在于矮星系并没有它们本应具有的冷暗物质的密度。
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