Q: What happened to Explorer S-1?

A: Explorer S-1 was lost during its launch on July 16, 1959, when its Juno II rocket failed shortly after liftoff.

Q: What was the purpose of Explorer S-1?

A: It was designed as a geoscience satellite to conduct Earth observations as part of NASA’s Explorers program.

Q: When and where was Explorer S-1 launched?

A: Explorer S-1 was launched on July 16, 1959, from Cape Canaveral Launch Complex 5 in Florida.

Explorer S-1

geoscience satellite in the Explorers program; lost during a launch vehicle failure

Vehicle Earth Observation Satellite Q4530612

Facts

9 properties

Instance of: Earth observation satellite, former entity^[2]
Launch date: 1959-07-16
Diameter: 75 centimetre^[8]
Launch vehicle: Juno II
Mass: 41 kg^[7]
Significant event: rocket launch^[5]
Space launch vehicle: Juno II^[3]
Start point: Cape Canaveral Launch Complex 5^[6]
UTC date of spacecraft launch: July 16, 1959^[4]

🏷️ Also known as

en S-1 (satellite) en Explorer 7X en Explorer S-1 en NASA S-1 ar إكسبلورر_إس-1 ru NASA S-1 ru Эксплорер С-1 uk Експлорер С-1

🔖 Identifiers · 1

Google Knowledge Graph ID: /g/12372lc4

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🔗 Connections

Instance of 2

Earth observation satellite, former entity

Space launch vehicle 2

Juno I, Juno II

Significant event 1

rocket launch

Start point 1

Cape Canaveral Launch Complex 5

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Summary

Explorer S-1 is an Earth observation satellite^[1].

⭐ Popularity Graph

12/100 long tail

🌐 Wiki Languages

6 / 430 langs

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456 views trend: hourly, last 27h

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🌐 Available in 5 languages

enExplorer S-1 (satellite) arإكسبلورر إس-1 plExplorer S-1 ruЭксплорер С-1 ukЕксплорер С-1

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[2] ↑ Explorer S-1 — instance of (P31): former entity. wikidata.org.
[3] ↑ Explorer S-1 — space launch vehicle (P375): Juno II. Jonathan's Space Report. wikidata.org.
[4] ↑ Explorer S-1 — UTC date of spacecraft launch (P619): July 16, 1959. Jonathan's Space Report. wikidata.org.
[5] ↑ Explorer S-1 — significant event (P793): rocket launch. Jonathan's Space Report. wikidata.org.
[6] ↑ Explorer S-1 — start point (P1427): Cape Canaveral Launch Complex 5. Jonathan's Space Report. wikidata.org.
[7] ↑ Explorer S-1 — mass (P2067): 41 kg. wikidata.org.
[8] ↑ Explorer S-1 — diameter (P2386): 75 cm. wikidata.org.

Class ancestry

[1] ↑ Explorer S-1 is an instance of Earth observation satellite (Q854845) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Explorer S-1. Retrieved November 13, 2026, from https://4ort.xyz/entity/explorer-s-1

MLA “Explorer S-1.” 4ort.xyz Knowledge Graph, 4ort.xyz, 13 Nov. 2026, https://4ort.xyz/entity/explorer-s-1.

BibTeX

@misc{4ortxyz_explorer-s-1_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Explorer S-1}}, year = {2026}, url = {https://4ort.xyz/entity/explorer-s-1}, note = {Accessed: 2026-11-13}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Explorer S-1 — https://4ort.xyz/entity/explorer-s-1 (retrieved 2026-11-13)

Canonical URL: https://4ort.xyz/entity/explorer-s-1 · Last refreshed: November 13, 2026