Como os Asgardianos sobreviventes chegam à Terra?

I found this in ScreenRant

The Russo brothers have offered a simple solution. "Prior to the start of that scene, escape ships were deployed for Asgardians," Joe Russo explained, "including Valkyrie." He refused to shed any light on the ultimate fate of Korg, but at least this comment suggested Asgardians were able to launch escape pods. It's worth noting, though, that these escape pods likely weren't in a great state of repair. After all, the Asgardian refugee ship originated from the junkyard world of Sakaar.

By the time the Guardians of the Galaxy arrive, all escape ships - and, indeed, escape pods - are clearly gone. The only sign of life they find is the body of Thor, floating through space, barely alive after facing the wrath of the Power Stone.

If you look closely at the opening shot on Avengers: Infinity War, the aft section of the Asgardian refugee ship is briefly visible floating away (in the far right of the middle shot of the sequence below) after the superstructure had been blown into 2 pieces...

...and if one listens to the commentary by the Russo's and writers Markus and McFeely they specifically state that some of the passengers, including Valkyrie and Korg, had survived in the discarded section, a situation typical of Thanos randomly sparing (approximately?) half of the population.

"He stole the Space Stone from me when he destroyed my ship and slaughtered half my people. ..." (Thor upon first meeting the the Guardians aboard the Benetar)