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The satellite orbits are color coded for their observing program:

Near-Earth Fleet:

Geosynchronous Fleet:

Geospace Fleet:

Lunar Orbiting Fleet:


Major changes with earlier versions:
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This is the long-play version.", "width": 1024, "height": 576, "pixels": 589824 } } ], "older_versions": [ { "id": 4127, "url": "https://svs.gsfc.nasa.gov/4127/", "page_type": "Visualization", "title": "The 2013 Earth-Orbiting Heliophysics Fleet", "description": "There've been a few changes since the 2012 Earth-Orbiting Heliophysics Fleet. As of Fall of 2013, here's a tour of the NASA Near-Earth Heliophysics fleet, covering the space from near-Earth orbit out to the orbit of the Moon.The satellite orbits are color coded for their observing program:Magenta: TIM (Thermosphere, Ionosphere, Mesosphere) observationsYellow: solar observations and imageryCyan: Geospace and magnetosphereViolet: Heliospheric observationsNear-Earth Fleet:Hinode: Observes the Sun in multiple wavelengths up to x-rays. SVS pageRHESSI : Observes the Sun in x-rays and gamma-rays. SVS pageTIMED: Studies the upper layers (40-110 miles up) of the Earth's atmosphere.FAST: Measures particles and fields in regions where aurora form.CINDI: Measures interactions of neutral and charged particles in the ionosphere. SORCE: Monitors solar intensity across a broad range of the electromagnetic spectrum.AIM: Images and measures noctilucent clouds. SVS pageVan Allen Probes: Two probes moving along the same orbit esigned to study the impact of space weather on Earth's radiation belts. SVS pageTWINS: Two Wide-Angle Imaging Neutral-Atom Spectrometers (TWINS) are two probes observing the Earth with neutral atom imagers.IRIS: Interface Region Imaging Spectrograph is designed to take high-resolution spectra and images of the region between the solar photosphere and solar atmosphere.Geosynchronous Fleet:SDO: Solar Dynamics Observatory keeps the Sun under continuous observation at 16 megapixel resolution.GOES: The newest GOES satellites include a solar X-ray imager operated by NOAA.Geospace Fleet:Geotail: Conducts measurements of electrons and ions in the Earth's magnetotail. Cluster: This is a group of four satellites which fly in formation to measure how particles and fields in the magnetosphere vary in space and time. SVS pageTHEMIS: This is a fleet of three satellites to study how magnetospheric instabilities produce substorms. Two of the original five satellites were moved into lunar orbit to become ARTEMIS. SVS page IBEX: The Interstellar Boundary Explorer measures the flux of neutral atoms from the heliopause.Lunar Orbiting FleetARTEMIS: Two of the THEMIS satellites were moved into lunar orbit to study the interaction of the Earth's magnetosphere with the Moon. || ", "release_date": "2013-12-16T12:00:00-05:00", "update_date": "2025-01-19T22:11:46.015670-05:00", "main_image": { "id": 460015, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004100/a004127/Helio2013.slate_GSEmove.HD1080i.0500.jpg", "filename": "Helio2013.slate_GSEmove.HD1080i.0500.jpg", "media_type": "Image", "alt_text": "Movie showing the heliosphysics missions from near Earth orbit out to the orbit of the Moon. ", "width": 1920, "height": 1080, "pixels": 2073600 } } ], "alternate_versions": [] }