Assertion: soviet satellite | /r/HasProperty | sputnik
Facets:
Source sentences:
text: Following the launch of the Soviet satellite Sputnik 1 on October 4, 1957, the initial Project Orbiter program was revived as the Explorer program to catch up with the Soviet Union.
text: In comparison, the mass of the first Soviet satellite Sputnik 1 was 83.6 kg (184 lb).