Dr. Frank Rubio will be launching on a Russian Soyuz spacecraft Wednesday from Kazakhstan.
If all goes as planned, it will take six hours to get to the space station.
Rubio will be on a six-month mission, orbiting Earth.
Rubio was born in Los Angeles but grew up mostly in Florida.
He is a physician and former Army helicopter pilot.
Salvadorans are the second largest Latino group in California. His historic launch comes as we celebrate Hispanic Heritage Month.
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