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  2. Iridium satellite constellation - Wikipedia

    en.wikipedia.org/wiki/Iridium_satellite...

    The solution will be supported using a version of the NB-IoT standard for 5G non-terrestrial networks (NTN). Scheduled for launch in 2026, it won't replace the company's proprietary solution for voice and high-speed data; instead it will co-exist with that offering on the Iridium's existing global low-earth orbit satellite network. [69] [70]

  3. Gemini Guidance Computer - Wikipedia

    en.wikipedia.org/wiki/Gemini_Guidance_Computer

    The computer was architecturally similar to the Saturn Launch Vehicle Digital Computer, in particular in the instruction set; [6] however its circuit integration was less advanced. [7] The GGC weighed 58.98 pounds (26.75 kg) and was powered by 28V DC. During a short power outage it could be powered by the Auxiliary Computer Power Unit (ACPU)

  4. Satellite television - Wikipedia

    en.wikipedia.org/wiki/Satellite_television

    Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location. [1] The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter.

  5. AOL Mail

    mail.aol.com

    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!

  6. TRACE (computer program) - Wikipedia

    en.wikipedia.org/wiki/TRACE_(computer_program)

    TRACE is a high-precision orbit determination and orbit propagation program. It was developed by The Aerospace Corporation in El Segundo, California. An early version ran on the IBM 7090 computer in 1964. [1] The Fortran source code can be compiled for any platform with a Fortran compiler.

  7. Lacrosse (satellite) - Wikipedia

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

    The launch of NROL-41 (USA 215) in September 2010 has all orbital characteristics of a radar remote sensing platform (see FIA) and could be the first of a Lacrosse follow-up program. Its orbit is a retrograde version of the "frozen" Lacrosse orbit, [ 9 ] the choice for a retrograde orbit itself indicating a SAR role.

  8. Spacecraft attitude determination and control - Wikipedia

    en.wikipedia.org/wiki/Spacecraft_attitude...

    In orbit, a spacecraft with one axis much longer than the other two will spontaneously orient so that its long axis points at the planet's center of mass. This system has the virtue of needing no active control system or expenditure of fuel. The effect is caused by a tidal force. The upper end of the vehicle feels less gravitational pull than ...

  9. USA-298 - Wikipedia

    en.wikipedia.org/wiki/USA-298

    USA-298, also known as Advanced Extremely High Frequency 6 or AEHF-6, is a military communications satellite operated by the United States Space Force (USSF). It is the sixth of six satellite to be launched as part of the Advanced Extremely High Frequency program, which replaced the earlier Milstar system.