On This Day

NASA Explorer S-45 mission; ionosphere beacon satellite fails to reach Earth orbit

Explorer S-45 was a NASA satellite, which was lost in a launch failure in February 1961.

Explorer S-45 was a NASA satellite, which was lost in a launch failure in February 1961. The satellite was intended to operate in a highly elliptical orbit, from which it was to have provided data on the shape of the ionosphere, and on the Earth's magnetic field. It was part of the Explorer program, and would have been designated Explorer 10 had it reached orbit. A second identical satellite, Explorer S-45A, also failed to achieve orbit when it was launched.

Historical Significance

Explorer S-45 was a NASA satellite, which was lost in a launch failure in February 1961.

Events Before

  1. Fausto Coppi dies

    Fausto Coppi cyclist, known for italian cyclist, died on 1960-01-02. Angelo Fausto Coppi was an Italian cyclist, the dominant international cyclist of the years after the Second World War.

  2. A photograph of a 13-year-old South African boy in a torn vest working in a mine is published in the Daily Herald; emplo

    A photograph of a 13-year-old South African boy in a torn vest working in a mine is published in the Daily Herald; employing a 'native' under 18 in the mines is illegal under the Native Labour Regulation Act

  3. LaMar Clark sets pro boxing record of 44 consecutive knockouts

    LaMar Clark sets pro boxing record of 44 consecutive knockouts

  4. Comedic actor Bob Denver (25) weds Maggie Ryan in California

    Comedic actor Bob Denver (25) weds Maggie Ryan in California

  5. American songwriter Adolph Green (45) weds (for 3rd and final time) American actress and singer Phyllis Newman (24) in N

    American songwriter Adolph Green (45) weds (for 3rd and final time) American actress and singer Phyllis Newman (24) in NYC, until his death in 2002

Events After

  1. Belgium grants Rwanda internal self-governance

    Belgium grants Rwanda internal self-governance

  2. John Glenn becomes the first American to orbit Earth aboard Friendship 7

    John Herschel Glenn Jr. (July 18, 1921 – December 8, 2016) was an American Marine Corps aviator, astronaut, businessman, and politician.

  3. Philadelphia center Wilt Chamberlain scores 100 points, the most ever by an NBA player in a single game, in the Warriors

    Philadelphia center Wilt Chamberlain scores 100 points, the most ever by an NBA player in a single game, in the Warriors' 169-147 win over the NY Knicks in Hershey; 36-of-63 from the field, 28-of-32 from the free-throw line

  4. Five research groups announce the discovery of antimatter

    Five research groups announce the discovery of antimatter

  5. Stan Musial scores his 1,869th run, setting a new National League record

    Stan Musial scores his 1,869th run, setting a new National League record

More from the 1960s

Frequently Asked Questions

What happened on February 24, 1961?
Explorer S-45 was a NASA satellite, which was lost in a launch failure in February 1961. The satellite was intended to operate in a highly elliptical orbit, from which it was to have provided data on the shape of the ionosphere, and on the Earth's magnetic field. It was part of the Explorer program, and would have been designated Explorer 10 had it reached orbit.
Why is NASA Explorer S-45 mission; ionosphere beacon satellite fails to reach Earth ... significant?
Explorer S-45 was a NASA satellite, which was lost in a launch failure in February 1961.

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