VANGUARD

Vanguard

The Vanguard rocket was intended to be the first launch vehicle the United States would use to place a satellite into orbit. Instead, the Sputnik crisis caused by the surprise launch of Sputnik 1 led the U.S., after the failure of Vanguard TV3, to quickly orbit the Explorer 1 satellite using a Juno I rocket, making Vanguard I the second successful U.S. orbital launch.

The above text is a snippet from Wikipedia: Vanguard (rocket)
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vanguard

Noun

  1. The leading units at the front of an army or fleet.
  2. The person(s) at the forefront of any group or movement.


The above text is a snippet from Wiktionary: vanguard
and as such is available under the Creative Commons Attribution/Share-Alike License.

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