The sky outside was a rich, deep blue, broken only by the diffuse pallor of distant nebulae.

Only the distant nebula of Andromeda remained.

Near the center of the screen a distant nebula made a patch of haze that was difficult for the eye to grasp.

Enterprise scanned for a hiding place, finding a nebula two and a half light-years distant.

In 1755, Immanuel Kant introduced the term "island Universe" for these distant nebulae.

The channel closed, and the nebula's distant blue stain on the starry heavens returned to the Enterprise's main viewscreen.

But physics with her strict laws handled it all and kept discipline, forced the most distant nebulae of easy virtue into a most firm reality".

The basic issue under debate was whether distant nebulae were relatively small and lay within our own galaxy or whether they were large, independent galaxies.

The crystal air was so dear that it seemed she could see distant nebulae with her naked eye.

A moment later, one of the passageways spiraled open inside the blue night of the distant nebula.