🔬 Discovery

Gamma-ray bursts (Vela satellites)

Estallidos de rayos gamma (satélites Vela)

Date
2 de julio de 1967 (publicado en 1973) · confidence high
Place
Los Alamos National Laboratory, New Mexico, United States
Credited to
Ray Klebesadel, Ian Strong and Roy Olson (Los Alamos)
Field
Cosmos & Earth

What was discovered

The Vela military satellites, designed to monitor nuclear tests, detected brief flashes of gamma rays of cosmic origin. The finding, published in 1973, opened a field now attributed to stellar explosions and neutron-star mergers.

Detected on 2 July 1967 by Vela 4a and 4b; the team took six years to rule out a terrestrial or solar origin and publish.

What it led to

  • the Compton Gamma Ray Observatory (1991) and the Swift and Fermi missions
  • confirmation of their extragalactic origin (BeppoSAX, 1997)
  • detection of neutron-star mergers (GW170817)
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Sources✓ verified 2026-11-04