Program archive

Explorer program

Explorer 1 turned the first successful U.S. satellite launch into a landmark scientific mission and opened a continuing family of space-science investigations.

Missions: 37
People: 0
Vehicles: 39

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Choose a path through the Explorer program archive.

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Explorer program photos

Mission insignia, imagery, and direct links into every archived record.

Showing photos 1–12 of 3712 per page

Explorer 1Mission image

Explorer 2Mission image

Explorer 3Mission image

Explorer 4Mission image

Explorer 5Mission image

Beacon 1Mission image

Explorer S-1Mission image

Explorer 6Mission image

Beacon 2Mission image

Explorer 7Mission image

IMP-1Mission image

IMP-2Mission image

Official collections and references

Program photography, histories, and source collections for deeper exploration.

NASA Explorer 1

Official mission overview, science, history, imagery, videos, and resources.

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Explorer 1 details

Fast facts, spacecraft specifications, launch history, instruments, and orbital record.

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NASA history collection

Broader historical context for Explorer 1 and the opening of the Space Age.

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Program archive

Explorer program

Explorer 1 turned the first successful U.S. satellite launch into a landmark scientific mission and opened a continuing family of space-science investigations.

Missions: 37
People: 0
Vehicles: 39

Explore this program

Choose a path through the Explorer program archive.

Currently viewing · Photos