Spacewalk (noun)

1. An activity in which an astronaut leaves a spacecraft and walks outside in space, typically while wearing a spacesuit.
2. An experience or situation that resembles a spacewalk, especially one that involves a feeling of detachment or isolation.

Origin:

Derived from 'space' and 'walk', first used in the mid 20th century to describe walks outside spacecraft.

Examples:

1. The spacewalk was an exciting moment for the astronaut and for people watching from Earth.
2. The spacewalk required careful preparation and specialized equipment.
3. The spacewalk provided the first direct observations of the moon's surface.
4. The spacewalk was a dangerous, but necessary, mission to repair the satellite.
5. The spacewalk was a unique opportunity for the astronaut to experience the beauty and emptiness of space.