Pioneer 1

1957–1969: Opening the Space Age

Pioneer 1

First U.S. lunar probe; failed to reach the Moon but returned radiation data.

Era 1 of 6 · full record in the catalog

Launch
year known only: 1958
Lead / partner
United States
Target
Moon
Category
Lunar probe
Status
Partial success
Vehicle
Thor DM 18-Able I
Mass
unknown
Orbit / trajectory
unknown

Why it happened

Pioneer 1 flew during 1957–1969: Opening the Space Age, as part of United States's work toward moon. 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: First U.S. lunar probe; failed to reach the Moon but returned radiation data.

Results

First U.S. lunar probe; failed to reach the Moon but returned radiation data.

Related missions

Pioneer 1 Pioneer 2 — same_target Pioneer 2 Luna 1 — same_target Luna 1 Luna 2 — same_target Luna 2 Luna 3 — same_target Luna 3

Luna 1

Partial success

Soviet Union · 1959

Luna 2

Success

Soviet Union · 1959

Luna 3

Success

Soviet Union · 1959

Sources & image credits

  • NASA, via Wikimedia Commons · Public domain · license: public-domain (source, checked 2026-08-24)
  • Mission record: AntarikshPedia canonical dataset (data-sources/missions_timeline.md)
  • Specifications reference: NASA NSSDCA Master Catalog