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Explorer 1
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Explorer 1
Explorer 1. Computer artwork of Americas first successful artificial satellite, Explorer 1 showing part of its interior. Explorer 1 was launched on 31 January 1958, after the USSR took the USA by surprise by launching the worlds first artificial satellite, Sputnik 1, on 4 October 1957. The satellite measured 2.05 metres in length and weighed 14 kilograms. It orbited Earth at heights of between 360 kilometres and 2520 kilometres until 31 March 1970. It carried, amongst other instruments, a geiger counter, used to detect cosmic rays. Data collected by the satellite led to the discovery of the Van Allen radiation belt, a torus of charged particles held in place by the Earths magnetic field
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Media ID 6442909
© DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY
1900s 1950s 1958 31 January 1958 31st Artificial Satellite Cosmic Ray Research Explorer 1 Instrument Instruments Interior International Geophysical Year Jet Propulsion Laboratory Nasa North American Rocket Satellite 1958 Alpha Space Flight Space Race Van Allen Radiation Belt
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EDITORS COMMENTS
This artwork captures the interior of Explorer 1, America's first successful artificial satellite. Launched on January 31,1958, in response to the USSR's groundbreaking launch of Sputnik 1 a few months earlier, Explorer 1 marked a significant milestone in the space race between these two superpowers. Measuring at an impressive length of 2.05 meters and weighing 14 kilograms, this technological marvel orbited Earth for over twelve years until March 31,1970. Equipped with various instruments including a geiger counter for detecting cosmic rays, Explorer 1 played a crucial role in advancing our understanding of space and its mysteries. It was through data collected by this historic satellite that scientists made an astonishing discovery: the existence of the Van Allen radiation belt. This torus-shaped region filled with charged particles is held in place by Earth's magnetic field and has since become an essential area of study for researchers worldwide. The image showcases not only the intricate interior design but also pays homage to the ingenuity and determination that propelled humanity into space exploration during the mid-20th century. As we reflect on this pivotal moment in history captured within this print from Science Photo Library, we are reminded of how far we have come technologically while remaining inspired to continue pushing boundaries beyond our planet's atmosphere.
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