Wind (spacecraft)
The Global Geospace Science (GGS) Wind satellite is a NASA science spacecraft. It studies radio waves and plasma that occur in the solar wind and in the Earth's magnetosphere. It is still in service (as of the 2020s).
 Wind satellite is the first of NASA's Global Geospace Science program | |
| Names | GGS/Wind, ITSP/Wind, Interplanetary Physics Laboratory |
|---|---|
| Mission type | Heliophysics |
| Operator | NASA |
| COSPAR ID | 1994-071A |
| SATCAT no. | 23333 |
| Website | wind |
| Mission duration | 3 years (planned) 30 years and 15 days (in progress) |
| Spacecraft properties | |
| Manufacturer | Martin Marietta |
| Launch mass | 1,250 kg (2,760 lb) |
| Dry mass | 950 kg (2,090 lb) |
| Payload mass | 195 kg (430 lb) |
| Dimensions | 2.4 × 1.8 m (7 ft 10 in × 5 ft 11 in) |
| Power | 370 watts |
| Start of mission | |
| Launch date | 1 November 1994, 09:31:00 UTC |
| Rocket | Delta II 7925-10 (Delta 227) |
| Launch site | Cape Canaveral, SLC-17B |
| Contractor | McDonnell Douglas |
| Orbital parameters | |
| Reference system | Heliocentric orbit |
| Regime | L1 Lagrange point |
| Sun orbiter | |
| Orbital insertion | May 2004 |
It was launched on 1 November 1994, at 09:31:00 UTC, from launch pad LC-17B at Cape Canaveral Air Force Station (CCAFS) in Merritt Island, Florida, aboard a McDonnell Douglas Delta II 7925-10 rocket. Wind was designed and manufactured by Martin Marietta Astro Space Division in East Windsor Township, New Jersey. The satellite is a spin-stabilized cylindrical satellite with a diameter of 2.4 m (7 ft 10 in) and a height of 1.8 m (5 ft 11 in).
The spacecraft's original mission was to orbit the Sun at the L1 Lagrangian point, but this was delayed to study the magnetosphere and near lunar environment when the Solar and Heliospheric Observatory (SOHO) and Advanced Composition Explorer (ACE) spacecraft were sent to the same location. Wind has been at L1 continuously since May 2004, and is still operating as of 2024. As of 2024, Wind currently has enough fuel to last over 50 more years at L1, until at least 2070. Wind continues to collect data, and by the end of 2023 had contributed data to over 7,290 scientific publications.
Mission operations are conducted from the Multi-Mission Operations Center (MMOC) in Building 14 at Goddard Space Flight Center in Greenbelt, Maryland. Wind data can be accessed using the SPEDAS software. Wind is the sister ship to GGS Polar.