In a picture it looked like the Coal Sack.

From any of the known human worlds, the Coal Sack was a black hole in the sky.

The Coal Sack was high in the night sky.

In 2862 there were no starships behind the Coal Sack.

In 2891 the Coal Sack was a black silhouette of a hooded man.

The first problem was the Coal Sack seen from ten parsecs.

By all the sun systems of the Coal Sack!

Every bleeding heart this side of the Coal Sack wants your scalp.

There were no other stars in the Coal Sack.

It is not a galactic nebula like the Coal Sack.