Among those who attended the event in Uppsala was Gabriella Stenberg Wieser, a researcher at the Swedish Institute of Space Physics. She explained that Sweden has had a fairly large involvement in the Rosetta mission.
"Both Swedish industry and the Swedish scientific community have made quite large contributions to the mission," Stenberg Wieser said.
The reason why the scientists ended the space probe's mission with a crash is that it will soon be out of communication reach.
"It's a spectacular end to a fantastic mission that has made lots of progress scientifically," Stenberg Wieser said.