<page_title> Space Age </page_title> <section_title> Chronology </section_title> <table> <cell> October 4, 1957 <col_header> Date </col_header> </cell> <cell> Sputnik 1 <col_header> Mission </col_header> </cell> <cell> Soviet Union <col_header> Country </col_header> </cell> </table>
Sputnik 1 was launched on October 4, 1957 in the Soviet Union.