Corporate researchers may be living on the moon by the time NASA astronauts head off to visit an asteroid in the 2020s, a study of future human missions unveiled on Thursday shows.

The study by Bigelow Aerospace, commissioned by NASA, shows "a lot of excitement and interest from various companies" for such ventures, said Robert Bigelow, founder and president of the Las Vegas-based firm.

The projects range from pharmaceutical research aboard Earth-orbiting habitats, to missions to the moon's surface, he said on Thursday, citing a draft of the report due to be released in a few weeks.

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