External galaxies akin to our own are scattered throughout space as far as we can see.
External galaxies akin to our own are scattered throughout space as far as we can see.
银河系附近的星系在空间中飘散，正如我们所见到的。
External galaxies akin to our own are scattered throughout space as far as we can see.
银河系附近的星系在空间中飘散，正如我们所见到的。