Q: What was the Vanguard Balloon?

A: The Vanguard Balloon was a NASA atmospheric balloon launched in 1959 as a balloon satellite. It was deployed from Cape Canaveral using a Vanguard launch vehicle and was also known as the 30-inch Sphere.

Q: When and where was the Vanguard Balloon launched?

A: The Vanguard Balloon was launched on April 14, 1959, from Cape Canaveral Launch Complex 18 in Florida.

Q: What type of satellite was the Vanguard Balloon?

A: The Vanguard Balloon was classified as a balloon satellite, meaning it was a satellite inflated with gas after being put into orbit.

Vanguard Balloon

NASA atmospheric balloon

Vehicle balloon_satellite Q12115751

Facts

8 properties

Instance of: balloon satellite
Launch date: 1959-04-14
Described by source: Gunter's Space Page^[5]
Launch vehicle: Vanguard
Significant event: rocket launch^[4]
Space launch vehicle: Vanguard^[2]
Start point: Cape Canaveral Launch Complex 18^[6]
UTC date of spacecraft launch: April 14, 1959^[3]

🏷️ Also known as

en 30-inch Sphere en Vanguard Balloon es Bala de wengard ru 30-дюймовая сфера uk Куля Венґард

🔖 Identifiers · 1

Google Knowledge Graph ID: /g/123dmg_m5

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🔗 Connections

Described by source 1

Gunter's Space Page

Instance of 1

balloon satellite

Significant event 1

rocket launch

Space launch vehicle 1

Vanguard

Start point 1

Cape Canaveral Launch Complex 18

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Summary

Vanguard Balloon is a balloon satellite^[1].

References

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

Direct Wikidata claims

[2] ↑ Vanguard Balloon — space launch vehicle (P375): Vanguard. Jonathan's Space Report. wikidata.org.
[3] ↑ Vanguard Balloon — UTC date of spacecraft launch (P619): April 14, 1959. Jonathan's Space Report. wikidata.org.
[4] ↑ Vanguard Balloon — significant event (P793): rocket launch. Jonathan's Space Report. wikidata.org.
[5] ↑ Vanguard Balloon — described by source (P1343): Gunter's Space Page. space.skyrocket.de. Retrieved 2021-10-24. space.skyrocket.de. Provenance: wikidata.org.
[6] ↑ Vanguard Balloon — start point (P1427): Cape Canaveral Launch Complex 18. Jonathan's Space Report. wikidata.org.

Class ancestry

[1] ↑ Vanguard Balloon is an instance of balloon satellite (Q805331) [P31, primary]. Wikidata. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Vanguard Balloon. Retrieved May 3, 2026, from https://4ort.xyz/entity/vanguard-balloon

MLA “Vanguard Balloon.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/vanguard-balloon.

BibTeX

@misc{4ortxyz_vanguard-balloon_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Vanguard Balloon}}, year = {2026}, url = {https://4ort.xyz/entity/vanguard-balloon}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Vanguard Balloon — https://4ort.xyz/entity/vanguard-balloon (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/vanguard-balloon · Last refreshed: May 3, 2026