Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Wani dan sararin samaniya ko cosmonaut mutum ne wanda aka horar da shi ta hanyar shirin sararin samaniya na mutum don ya jagoranci, matukin jirgi, ko kuma ya zama memba na ma'aikatan jirgin sama. Kodayake ana amfani da su ne kawai ga masu tafiya a sararin samaniya, ana amfani da waɗannan sharuɗɗan a wasu lokuta ga duk wanda ke tafiya zuwa sararin samaniya, gami da masana kimiyya, 'yan siyasa,' yan jarida, da masu yawon buɗe ido. Har zuwa 2002, gwamnatoci ne kawai ke tallafawa da horar da 'yan saman jannati, ko dai ta hanyar sojoji ko kuma hukumomin sararin samaniya na farar hula. Tare da jirgin suborbital na SpaceShipOne mai zaman kansa a shekara ta 2004, an kirkiro sabon nau'in 'yan saman jannati: dan saman jannati na kasuwanci.  Tambaya: Wanene ɗan sararin samaniya?
mutumin da aka horar da shi ta hanyar shirin sararin samaniya na mutum don ya jagoranci, matukin jirgi, ko kuma ya zama memba na ma'aikatan jirgin sama.