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  2. International Space Station - Wikipedia

    en.wikipedia.org/wiki/International_Space_Station

    The International Space Station (ISS) is a large space station that was assembled and is maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). The ISS is the largest space station ever built.

  3. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    [19] [20] Planned orbit for the NASA Lunar Gateway in circa 2024, as a highly-elliptical seven-day near-rectilinear halo orbit around the Moon, which would bring the small space station within 3,000 kilometers (1,900 mi) of the lunar north pole at closest approach and as far away as 70,000 kilometers (43,000 mi) over the lunar south pole. [21 ...

  4. Satellite ground track - Wikipedia

    en.wikipedia.org/wiki/Satellite_ground_track

    Ground track of the International Space Station for approximately two periods. The light and dark regions represent the regions of the Earth in daylight and in the night, respectively. A satellite ground track or satellite ground trace is the path on the surface of a planet directly below a satellite's trajectory.

  5. Poles of astronomical bodies - Wikipedia

    en.wikipedia.org/wiki/Poles_of_astronomical_bodies

    The International Astronomical Union (IAU) defines the north pole of a planet or any of its satellites in the Solar System as the planetary pole that is in the same celestial hemisphere, relative to the invariable plane of the Solar System, as Earth's north pole. [1] This definition is independent of the object's direction of rotation about its ...

  6. Absolute rotation - Wikipedia

    en.wikipedia.org/wiki/Absolute_rotation

    Bouncing ball in a rotating space station: The objective reality of the ball bouncing off the outer hull is confirmed both by a rotating and by a non-rotating observer, hence the rotation of the space station is an "absolute", objective fact regardless of the chosen frame of reference.

  7. Orbital station-keeping - Wikipedia

    en.wikipedia.org/wiki/Orbital_station-keeping

    Earth-Sun L 2 —approximately 1.5 million kilometers from Earth in the anti-sun direction—is another important Lagrange point, and the ESA Herschel space observatory operated there in a Lissajous orbit during 2009–2013, at which time it ran out of coolant for the space telescope. Small station-keeping orbital maneuvers were executed ...

  8. Electrical system of the International Space Station - Wikipedia

    en.wikipedia.org/wiki/Electrical_system_of_the...

    International Space Station solar array wing (Expedition 17 crew, August 2008).An ISS solar panel intersecting Earth's horizon.. The electrical system of the International Space Station is a critical part of the International Space Station (ISS) as it allows the operation of essential life-support systems, safe operation of the station, operation of science equipment, as well as improving crew ...

  9. Very low Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Very_low_Earth_orbit

    Fuel consumption increases exponentially the closer to Earth the orbit is. The International Space Station (ISS) originally orbited at an average of 350 km (217 mi) from Earth, but was boosted to an average of 400 km (248 mi) in 2011. [14] This allowed the ISS to go from an average fuel use of 8,600 kg per year to 3,600 kg per year.