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  2. List of Earth observation satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_observation...

    NASA Earth science satellite fleet as of September 2020, planned through 2023. Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect imagery and measurements of the surface of the earth. These satellites are used to monitor short-term weather ...

  3. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    For Earth this means a period of just under 12 hours at an altitude of approximately 20,200 km (12,544.2 miles) if the orbit is circular. [16] Molniya orbit: A semi-synchronous variation of a Tundra orbit. For Earth this means an orbital period of just under 12 hours. Such a satellite spends most of its time over two designated areas of the ...

  4. High Earth orbit - Wikipedia

    en.wikipedia.org/wiki/High_Earth_orbit

    High Earth orbit. Space of high Earth orbits (HEO), between medium Earth orbits (MEO) and the orbit of the Moon. A high Earth orbit is an geocentric orbit with an apogee farther than that of the geosynchronous orbit, which is 35,786 km (22,236 mi) away from Earth. [1] In this article, the non-standard abbreviation of HEO is used for high Earth ...

  5. Chandra X-ray Observatory - Wikipedia

    en.wikipedia.org/wiki/Chandra_X-ray_Observatory

    Chandra is an Earth satellite in a 64-hour orbit, and its mission is ongoing as of 2024. Chandra is one of the Great Observatories , along with the Hubble Space Telescope , Compton Gamma Ray Observatory (1991–2000), and the Spitzer Space Telescope (2003–2020).

  6. List of satellite pass predictors - Wikipedia

    en.wikipedia.org/wiki/List_of_satellite_pass...

    ISS SpaceX Satellite Tracking – tracks all Earth orbiting satellites while providing detailed location information for the users location, plus pass prediction listing. TrackSat - Satellite tracker – can track satellites orbiting the Earth in real time and predict their passes over your specific geolocation. Includes satellites such as ...

  7. Voyager 1 - Wikipedia

    en.wikipedia.org/wiki/Voyager_1

    Communication system. [edit] The radio communication system of Voyager 1 was designed to be used up to and beyond the limits of the Solar System. It has a 3.7-metre (12 ft) diameter high-gain Cassegrain antenna to send and receive radio waves via the three Deep Space Network stations on the Earth. [ 21 ]

  8. James Webb Space Telescope - Wikipedia

    en.wikipedia.org/wiki/James_Webb_Space_Telescope

    Webb operates in a halo orbit, circling around a point in space known as the Sun–Earth L 2 Lagrange point, approximately 1,500,000 km (930,000 mi) beyond Earth's orbit around the Sun. Its actual position varies between about 250,000 and 832,000 km (155,000–517,000 mi) from L 2 as it orbits, keeping it out of both Earth and Moon's shadow.

  9. Deep Space Climate Observatory - Wikipedia

    en.wikipedia.org/wiki/Deep_Space_Climate_Observatory

    Deep Space Climate Observatory (DSCOVR; formerly known as Triana, unofficially known as GoreSat[ 3 ]) is a National Oceanic and Atmospheric Administration (NOAA) space weather, space climate, and Earth observation satellite. It was launched by SpaceX on a Falcon 9 v1.1 launch vehicle on 11 February 2015, from Cape Canaveral. [ 4 ]