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Sputnik Sputnik 1 Sputnik virophage Sputnik (hãng thông tấn) Sputnik 2 Sputnik (tạp chí) Sputnik V Sout NikomTài liệu tham khảo
WikiPedia: Sputnik 1 http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc... http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.d... http://www.sputnik1.yatb.info/. http://vnexpress.net/GL/The-gioi/2007/10/3B9FAE5E/ http://vnexpress.net/GL/The-gioi/Anh/2007/10/3B9FA... http://www.arrl.org/news/features/2007/09/28/03/?n... http://www.vietastro.org/news/index.php?option=com... //www.worldcat.org/issn/0002-8738 https://www.americanheritage.com/content/shooting-... https://web.archive.org/web/20071011045828/http://...