AntarikshPedia
HEAO-1

1970–1985: Solar-System Firsts and Scientific Reach

HEAO-1

Broad-band X-ray and gamma-ray survey observatory.

Era 2 of 6 · full record in the catalog

Launch
year known only: 1977
Lead / partner
United States
Target
Earth orbit
Category
High-energy astronomy
Status
Success
Vehicle
unknown
Mass
unknown
Orbit / trajectory
unknown

Why it happened

HEAO-1 flew during 1970–1985: Solar-System Firsts and Scientific Reach, as part of United States's work toward earth orbit. A sourced write-up of the context around this mission is still on the editorial queue; nothing here is invented to fill the gap.

The mission

The full narrative of this mission is pending research and writing. What is recorded so far: Broad-band X-ray and gamma-ray survey observatory.

Results

Broad-band X-ray and gamma-ray survey observatory.

Related missions

HEAO-1 Seasat — same_target Seasat Apollo–Soyuz Test Project — same_target Apollo–Soyuz … Aryabhata — same_target Aryabhata Cos-B — same_target Cos-B

Seasat

Partial success

United States · 1978

Aryabhata

Partial success

India / Soviet Union · 1975

Sources & image credits

  • Image credit: NASA · license: public-domain (source, checked 2026-08-23)
  • Mission record: AntarikshPedia canonical dataset (data-sources/missions_timeline.md)
  • Specifications reference: NASA NSSDCA Master Catalog