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  2. HTTP 502 - Wikipedia

    en.wikipedia.org/wiki/HTTP_502

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    504 Gateway Timeout The server was acting as a gateway or proxy and did not receive a timely response from the upstream server. 505 HTTP Version Not Supported The server does not support the HTTP version used in the request. 506 Variant Also Negotiates (RFC 2295) Transparent content negotiation for the request results in a circular reference. [27]

  4. Near-rectilinear halo orbit - Wikipedia

    en.wikipedia.org/wiki/Near-rectilinear_halo_orbit

    Near-rectilinear halo orbit (NRHO) in cislunar space, as illustrated by A.I. Solutions, Inc. using the FreeFlyer software. In orbital mechanics a near-rectilinear halo orbit (NRHO) is a halo orbit that passes close to the smaller of two bodies and has nearly stable behavior. [1] The CAPSTONE mission, launched in 2022, is the first spacecraft to ...

  5. Lunar Gateway - Wikipedia

    en.wikipedia.org/wiki/Lunar_Gateway

    The Lunar Gateway, or simply Gateway, is a space station which is planned to be assembled in orbit around the Moon. The Gateway is intended to serve as a communication hub, science laboratory, and habitation module for astronauts as part of the Artemis program. It is a multinational collaborative project: participants include NASA, the European ...

  6. Simple Mail Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

    Message transfer can occur in a single connection between two MTAs, or in a series of hops through intermediary systems. A receiving SMTP server may be the ultimate destination, an intermediate "relay" (that is, it stores and forwards the message) or a "gateway" (that is, it may forward the message using some protocol other than SMTP).

  7. E-commerce payment system - Wikipedia

    en.wikipedia.org/wiki/E-commerce_payment_system

    E-commerce payment system. An e-commerce payment system (or an electronic payment system) facilitates the acceptance of electronic payment for offline transfer, also known as a subcomponent of electronic data interchange (EDI), e-commerce payment systems have become increasingly popular due to the widespread use of the internet-based shopping ...

  8. Gateway (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Gateway_(telecommunications)

    Gateway (telecommunications) A gateway is a piece of networking hardware or software used in telecommunications networks that allows data to flow from one discrete network to another. Gateways are distinct from routers or switches in that they communicate using more than one protocol to connect multiple networks [1][2] and can operate at any of ...

  9. The City on the Edge of Forever - Wikipedia

    en.wikipedia.org/wiki/The_City_on_the_Edge_of...

    Plot. While the USS Enterprise orbits a mysterious planet causing time distortions, Chief Medical Officer Leonard McCoy is treating a near-death Lt. Sulu when the Enterprise is rocked by another time wave and McCoy accidentally injects himself with a huge dose of cordrazine, a dangerous drug.