Pencil


The Pencil Nebula Supernova Shock Wave More
Astronomy Picture of the Day: The Pencil Nebula in Red and Blue This shock wave plows through interstellar space at over 500,000 kilometers per hour. More

The Pencil Nebula Supernova Shock Wave

This shock wave plows through interstellar space at over 500,000 kilometers per hour.

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