🔬 Discovery

Laika in orbit (Sputnik 2): first animal in Earth orbit

Laika en órbita (Sputnik 2): primer animal en órbita terrestre

Date
3 de noviembre de 1957 · confidence high
Place
Baikonur Cosmodrome, Kazakhstan (USSR)
Credited to
Soviet space programme (physicians Oleg Gazenko and Vladimir Yazdovsky)
Field
Movement

What was discovered

The dog Laika flew aboard Sputnik 2, a month after Sputnik 1, and was the first animal to orbit the Earth. She died a few hours later from overheating and stress, a fact Moscow concealed until 2002.

The USSR initially claimed Laika lived a week; in 2002 it was revealed she died within hours. The launch was rushed for the 40th anniversary of the Revolution.

What it led to

  • proof that a living being could survive launch and weightlessness
  • dog flights recovered alive (Belka and Strelka, 1960)
  • ethical debate over animal experimentation in space
🕸️ View in the graph

Built on

Made possible

Links

Sources✓ verified 2026-11-04