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  2. Future Imagery Architecture - Wikipedia

    en.wikipedia.org/wiki/Future_Imagery_Architecture

    Some industry experts believe that a key objective is to make the satellites more difficult to attack, possibly by placing them in higher orbits. Because of the large size of the program, as well as number of workers involved, some experts have compared it to the 1940s Manhattan Project. [5] The project encountered a number of technical challenges.

  3. Very low Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Very_low_Earth_orbit

    If VLEO orbits are sufficiently low, they are essentially self-cleaning, solving the significant problem of space debris. Because both gravitational pull and atmospheric drag are greater in VLEO than in higher orbits, vehicles in VLEO will remain there until either their propulsion runs out, or they are resupplied with fuel.

  4. Kessler syndrome - Wikipedia

    en.wikipedia.org/wiki/Kessler_syndrome

    The Envisat satellite is a large, inactive satellite with a mass of 8,211 kg (18,102 lb) that orbits at 785 km (488 mi), an altitude where the debris environment is the greatest—two catalogued objects can be expected to pass within about 200 m (660 ft) of Envisat every year [40] —and likely to increase. Don Kessler predicted in 2012 that it ...

  5. Teleoperator Retrieval System - Wikipedia

    en.wikipedia.org/wiki/Teleoperator_Retrieval_System

    It was developed to potentially re-boost the Skylab space station to a higher orbit. [2] After Skylab 4 , the third crewed mission to Skylab , plans were made to boost the station into a higher orbit to extend its service life or to de-orbit it into a remote ocean area. [ 3 ]

  6. The Viral Foundation That's Actually Worth It, According to ...

    www.aol.com/viral-foundation-thats-actually...

    Three Cosmo editors tested the Il Makiage Woke Up Like This Foundation—is it worth it? Read their Il Makiage foundation reviews, plus see before and after pics.

  7. The Descent of Anansi - Wikipedia

    en.wikipedia.org/wiki/The_Descent_of_Anansi

    The physics of tidal forces are explained, and the possibilities of orbital tethers to accelerate payloads into higher orbits (or indeed de-orbit shuttles without retro-rockets) are woven into a hard science fiction thriller.

  8. Orbital decay - Wikipedia

    en.wikipedia.org/wiki/Orbital_decay

    Orbital decay is a gradual decrease of the distance between two orbiting bodies at their closest approach (the periapsis) over many orbital periods.These orbiting bodies can be a planet and its satellite, a star and any object orbiting it, or components of any binary system.

  9. KH-11 KENNEN - Wikipedia

    en.wikipedia.org/wiki/KH-11_KENNEN

    Before KENNEN, National Reconnaissance Office spy satellites like KH-9 HEXAGON returned film photographs to Earth in capsules. Although film is a very effective way to photograph much territory at high resolution, when satellites ran out of film or capsules they became useless. [12]