Which event follows Vostok 1 directly in the spaceflight milestones timeline?

Answer options

• Option: ISS assembly
  "ISS assembly" vs. "Apollo 11" ISS assembly follows Apollo 11 in the; misses the target mapping. ISS assembly is linked to the event year 1998. The task targets this mapping, so ISS assembly remains wrong in this prompt.
• Option: Vostok 1
  "Vostok 1" vs. "Apollo 11" Vostok 1 follows Sputnik 1 in the; misses the target mapping. Vostok 1 is linked to the event year 1961. The task targets this mapping, so Vostok 1 remains wrong in this prompt.
• Correct: Apollo 11
  "Apollo 11" - target Apollo 11 follows Vostok 1 directly in the spaceflight timeline. Apollo 11 is linked to the event year 1969. The task targets this mapping, and Apollo 11 remains correct in this prompt.
• Option: Sputnik 1
  "Sputnik 1" vs. "Apollo 11" Sputnik 1 sits before Vostok 1 in the; misses the target mapping. Sputnik 1 is linked to the event year 1957. The task targets this mapping, so Sputnik 1 remains wrong in this prompt.

Solution

Apollo 11

Apollo 11 is correct: in spaceflight milestones, Vostok 1 is at position 2; the direct next neighbor is position 3. The prompt targets Apollo 11, so the graph keeps this mapping stable against close alternatives. Source: Wikidata. As of: 2026-02-13.

Fun fact

The timeline uses unique year values; same-date events are blocked without a stable sort key. Apollo 11 carries the additional dataset detail 1969. The graph therefore uses a multi-hop graph path;