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  2. Explorer 2 - Wikipedia

    en.wikipedia.org/wiki/Explorer_2

    Explorer 2 was an American unmanned space mission within the Explorer program.Intended to be a repetition of the previous Explorer 1 mission, which placed a satellite into medium Earth orbit, the spacecraft was unable to reach orbit due to a failure in the launch vehicle during launch.

  3. Explorers Program - Wikipedia

    en.wikipedia.org/wiki/Explorers_Program

    An Explorer mission observes Sagittarius A*, the Milky Way's central black hole, flaring. The Explorers program [1] is a NASA exploration program that provides flight opportunities for physics, geophysics, heliophysics, and astrophysics investigations from space. Launched in 1958, Explorer 1 was the first spacecraft of the United States to ...

  4. Double Star (satellite) - Wikipedia

    en.wikipedia.org/wiki/Double_Star_(satellite)

    The second polar spacecraft (Double Star 2, also known as DoubleStar2, Explorer 2, Tan Ce 2, TC-2) was launched July 25, 2004 at 07:05 UTC, also by a Long March 2C. It focuses on physical processes taking place over the magnetic poles and the development of aurorae .

  5. Explorer 49 - Wikipedia

    en.wikipedia.org/wiki/Explorer_49

    Explorer 49 (also called Radio Astronomy Explorer-2, RAE-B) was a NASA 328 kg (723 lb) satellite launched on 10 June 1973, for long wave radio astronomy research. It had four 230 m (750 ft) X-shaped antenna elements, which made it one of the largest spacecraft ever built.

  6. Explorer II - Wikipedia

    en.wikipedia.org/wiki/Explorer_II

    Explorer II was a crewed U.S. high-altitude balloon that was launched on November 11, 1935, and reached a record altitude of 22,066 m (72,395 ft). Launched at 8:00 am from the Stratobowl in South Dakota, the helium balloon carried a two-man crew consisting of U. S. Army Air Corps Captains Albert W. Stevens and Orvil A. Anderson inside a sealed, spherical cabin.

  7. List of missions to the outer planets - Wikipedia

    en.wikipedia.org/wiki/List_of_missions_to_the...

    Montage of planets and some moons that the two Voyager spacecraft have visited and studied. It is the only program that visited all four outer planets. A total of nine spacecraft have been launched on missions that involve visits to the outer planets; all nine missions involve encounters with Jupiter, with four spacecraft also visiting Saturn.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Explorer Two - Wikipedia

    en.wikipedia.org/wiki/Explorer_Two

    Explorer II (1935), a manned high-altitude balloon from National Geographic and the U.S. Army that set the manned high altitude record; MS Explorer II (cruise ship) (1989), a cruise ship; Raven Explorer II, a U.S. autogyro kitplane; JUST Explorer II, a Chinese scientific research autonomous underwater vehicle; Foday Explorer II, a Chinese SUV