Credit & Copyright: courtesy Marshall
Space Flight Center,
NASA
Explanation:
Inaugurating the era of space exploration for the US,
the
First Explorer,
a thirty pound satellite, was launched
into Earth orbit on February 1, 1958 by the
Army Ballistic Missle Agency.
Explorer I
carried instruments to measure temperatures,
micrometeorite impacts, and an experiment designed by
James A.
Van Allen to measure
the density of electrons and ions in space.
The measurements made by Van Allen's experiment led to an unexpected and
startling
discovery -- an earth-encircling belt of high energy
and ions trapped in the
magnetosphere
now known as the
Van
Allen Radiation Belt.
Explorer I ceased transmitting on February 28 of that year but
remained in orbit until March of 1970.
Pioneering astrophysicist
James Van Allen died on August 9th
at the age of 91.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
explorer 1 - satellite - Радиационные пояса - космические исследования - космический эксперимент
Публикации со словами: explorer 1 - satellite - Радиационные пояса - космические исследования - космический эксперимент | |
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