Sweden's space agency has faced criticism after its microgravity research rocket accidentally landed in Norway.

The Swedish rocket has already been retrieved from the Norweigan mountains. However, the country has faced criticism from Norway, as the country's foreign minister complained it had not been properly notified about the malfunction.

“The crash of a rocket like this is a very serious incident that can cause serious damage,” said Norweigan foreign ministry spokesperson Ragnhild Simenstad. “When such a border violation occurs, it is crucial that those responsible immediately inform the relevant Norwegian authorities through the proper channels.”

The rocket lifted off on Monday morning from the Esrange Space Center in Sweden. It was able to successfully reach an altitude of 250km, where it carried out several experiments in zero gravity, as planned. 

On its return, the rocket took a "slightly longer and more westerly trajectory than expected...