The European Space Agency's Rosetta mission will be ending tomorrow, and the completion of the mission will be aired on Nasa Television and the agency's website.
The mission will end with the spacecraft descending on the surface of comet 67P/Churyumov-Gerasimenko.
It will be broadcast from 11am-1pm BST on Friday with commentary, interviews and analysis of the mission. The controlled descent is scheduled to take place at 12:20pm.
Rosetta was launched in 2004 and arrived at the comet in August 2014, travelling alongside it as it orbited the sun. Two months later the Philae lander was deployed from Rosetta, landing on the comet.
The mission is ending because Rosetta is getting further from the sun, meaning the solar power which fuels the vehicle and its instruments is significantly reduced.
It is the first spacecraft to take a close-up view of how a comet changes in relation to the sun's radiation.
Observations should help scientists discover more about how the solar system came about and the role comets have played in the formation of planets.