Specifically, cosmonauts are Russian astronauts who travel to:

* The International Space Station (ISS): This is the primary destination for cosmonauts, where they conduct research, maintain the station, and collaborate with astronauts from other countries.

* Other spacecraft or space stations: Cosmonauts may also travel to other spacecraft, like the Soyuz spacecraft, or future Russian space stations.

* The Moon: While not a current destination, Russia has plans for future lunar missions.

* Other celestial bodies: In the future, cosmonauts may travel to Mars or other destinations in our solar system.

It's important to note that the term "cosmonaut" is specifically used for Russian space travelers. Astronauts are typically used for space travelers from other countries, such as the United States.