1958 in spaceflight

1958 in spaceflight
NASA · Public domain · source
Year	1958
Caption	Artist's depiction of Explorer 1, the first U.S. satellite.
First flight	Explorer 1
First launch date	1 February
Notable events	First U.S. satellite; creation of NASA
Total launches	~30
Success launches	~15
Failed launches	~15
Catalogued	10
Country	Soviet Union, United States
Next	1959
Prev	1957

1958 in spaceflight was a year of intense competition and foundational achievement, marking the escalation of the Space Race following the Soviet Union's launch of Sputnik 1. The United States successfully orbited its first satellite, Explorer 1, and established the National Aeronautics and Space Administration (NASA), fundamentally reshaping its space exploration efforts. The year witnessed numerous launch attempts by both superpowers, with many ending in failure, but also included pioneering missions to the Moon and the discovery of the Van Allen radiation belt.

Overview

The geopolitical and technological rivalry of the Cold War drove the rapid pace of development, with both the Soviet Union and the United States striving for space firsts. The year began with the embarrassing failure of the U.S. Vanguard TV3 launch attempt in December 1957, but quickly rebounded with the success of the Army Ballistic Missile Agency (ABMA) and Jet Propulsion Laboratory (JPL) team under Wernher von Braun, launching Explorer 1 on a Jupiter-C rocket. In response, the Soviet Union continued its Sputnik program with heavier satellites and initiated the first lunar probe missions. The creation of NASA in October, absorbing resources from the National Advisory Committee for Aeronautics (NACA) and other agencies, centralized American civilian space efforts, while the Soviet space program remained under the control of design bureaus like OKB-1 led by Sergei Korolev.

Launches

Orbital launch attempts in 1958 were dominated by the two superpowers, with approximately 30 efforts yielding around 15 successes. The United States conducted launches primarily from Cape Canaveral Air Force Station, using rockets like the Jupiter-C, Juno I, Thor-Able, and early versions of the Atlas. Notable American successes included Explorer 1, Explorer 3, and Vanguard 1, which became the oldest human-made object still in orbit. The Soviet Union launched from the Baikonur Cosmodrome, utilizing derivatives of the R-7 Semyorka ICBM, such as the Sputnik 8A91 and Luna 8K72, to orbit satellites like Sputnik 3, a large scientific laboratory. Many launches failed due to immature rocket technology, including several U.S. Pioneer lunar attempts and Soviet Luna probes.

Deep Space Rendezvous

This year saw the first human attempts to send spacecraft beyond Earth orbit, targeting the Moon. The United States initiated its Pioneer program with the Pioneer 0, Pioneer 1, and Pioneer 2 missions, all of which failed to reach the Moon due to launch vehicle malfunctions. The Soviet Union's Luna programme began with Luna E-1 No.1, which also failed at launch. The first spacecraft to achieve a hyperbolic trajectory and enter heliocentric orbit was the Soviet Luna 1 (also known as Mechta), launched on 2 January 1959; it missed the Moon but became the first human-made object to orbit the Sun. These early, often unsuccessful probes laid critical groundwork for future planetary science missions.

Significant events

Several landmark events defined 1958. The discovery of the Van Allen radiation belt by instruments on Explorer 1 and Explorer 3, designed by James Van Allen, was a major scientific breakthrough. The launch of the SCORE satellite by the U.S. Air Force marked the first broadcast of a human voice from space, a Christmas message from President Dwight D. Eisenhower. The Advanced Research Projects Agency (ARPA) played a key early role in coordinating U.S. space projects before the formation of NASA. The signing of the National Aeronautics and Space Act by President Eisenhower was the pivotal political act that created NASA, with T. Keith Glennan appointed as its first administrator.

Suborbital flights

A high volume of suborbital flights was conducted for scientific research, missile testing, and biological experiments. The United States launched numerous sounding rockets like the Aerobee and Jupiter series from sites such as White Sands Missile Range and Wallops Flight Facility, studying the upper atmosphere and ionosphere. The Soviet Union continued testing its R-7 Semyorka and other intercontinental ballistic missile (ICBM) designs. Notably, several flights carried biological payloads, including dogs and primates, as part of preparations for human spaceflight. These missions provided essential data on cosmic rays, microgravity, and re-entry physics that informed the design of orbital spacecraft.

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