As speedy, massive stars plow through space, they can cause material to stack up in front of them in the same way that water piles up ahead of a ship.
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As speedy, massive stars plow through space, they can cause material to stack up in front of them in the same way that water piles up ahead of a ship.
from EarthSky » Space http://ift.tt/22KK6dl
via IFTTT
Telescopically 