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  2. Pentagon UFO videos - Wikipedia

    en.wikipedia.org/wiki/Pentagon_UFO_videos

    The report came to no conclusion about what the UAPs were, based on a "lack [of] sufficient data to determine the nature of mysterious flying objects observed by military pilots — including whether they are advanced earthly technologies, atmospherics, or of an extraterrestrial nature", [60] though in a limited number of incidents, UAP ...

  3. Vapor cone - Wikipedia

    en.wikipedia.org/wiki/Vapor_cone

    A F/A-18F during transonic flight. A vapor cone (also known as a Mach diamond, [1] shock collar, or shock egg) is a visible cloud of condensed water that can sometimes form around an object moving at high speed through moist air, such as an aircraft flying at transonic speeds.

  4. Avro Canada CF-105 Arrow - Wikipedia

    en.wikipedia.org/wiki/Avro_Canada_CF-105_Arrow

    The Avro Canada CF-105 Arrow was a delta-winged interceptor aircraft designed and built by Avro Canada.The CF-105 held the promise of Mach 2 speeds at altitudes exceeding 50,000 feet (15,000 m) and was intended to serve as the Royal Canadian Air Force's (RCAF) primary interceptor into the 1960s and beyond.

  5. 11 photos of America's fighter jets breaking the sound barrier

    www.aol.com/article/2016/03/07/11-photos-fighter...

    The pictures demonstrate the amazing visual effects that occur as military aircraft punch through the sound barrier and travel faster than sound itself. 11 photos of America's fighter jets ...

  6. List of Earth flybys - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_flybys

    flyby 22,730 km success first Earth flyby, en route to Comet Grigg-Skjellerup [1] Galileo (first pass) NASA: 8 December 1990 flyby 960 km success gravity assist en route to Jupiter; minimum distance 960 km [2] Sakigake (first pass) ISAS: 8 January 1992 flyby 88,790 km success previously visited Halley's comet [3] Suisei: ISAS: 20 August 1992 ...

  7. Gravity assist - Wikipedia

    en.wikipedia.org/wiki/Gravity_assist

    A gravity assist, gravity assist maneuver, swing-by, or generally a gravitational slingshot in orbital mechanics, is a type of spaceflight flyby which makes use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically to save propellant and reduce expense.

  8. McDonnell Douglas AV-8B Harrier II - Wikipedia

    en.wikipedia.org/wiki/McDonnell_Douglas_AV-8B...

    As part of its 1996 Pepsi Stuff marketing campaign, Pepsi ran an advertisement promising a Harrier jet to anyone who collected 7 million Pepsi Points, a gag that backfired when a participant attempted to take advantage of the ability to buy additional points for 10 cents each to claim a jet for US$700,000 (~$1.26 million in 2023).

  9. Flyby (spaceflight) - Wikipedia

    en.wikipedia.org/wiki/Flyby_(spaceflight)

    Imagery collected by Voyager 2 of Ganymede during its flyby of the Jovian system Galileo spacecraft encounters asteroid 243 Ida. A flyby (/ ˈ f l aɪ b aɪ /) is a spaceflight operation in which a spacecraft passes in proximity to another body, usually a target of its space exploration mission and/or a source of a gravity assist (also called swing-by) to impel it towards another target. [1]