interstellar space

"We think there's a two-thirds chance this comet is older than the solar system, and that it's been drifting through interstellar space ever since."

The telescope, with its fellow Maunakea resident the James Clerk Maxwell Telescope, discovered that Earth is basking in light from excited molecules living quietly in interstellar space.

Voyager 1 exited the heliosphere in 2012, the first earthly object to reach interstellar space.

Somewhere in the cold interstellar space between our sun and the closest stars, its flight data system stopped communicating with the part of the probe that allows it to send signals back to Earth.

Such misbehaving molecules can appear in interstellar space.