ሳይንስ ዩሪ ጋጋሪን - የዓለማችን የመጀመሪያው የጠፈር ተጓዥTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTsehay Filatie6 ሚያዝያ 2013ረቡዕ፣ ሚያዝያ 6 2013https://p.dw.com/p/3s1nQማስታወቂያ