Engineers on NASA’s NEOWISE (Near-Earth Object Wide-field Infrared Survey Explorer) mission commanded the spacecraft to turn its transmitter off for the last
This final image captured by NASA’s NEOWISE shows part of the Fornax constellation in the Southern Hemisphere. Processed by IPAC at Caltech, this is the mission’s 26,886,704th exposure. It was taken by the spacecraft just before 3 a.m. EDT on Aug. 1, when the mission’s survey ended.Engineers on NASA’s NEOWISE mission commanded the spacecraft to turn its transmitter off for the last time Thursday.
NASA ended the mission because NEOWISE will soon drop too low in its orbit around Earth to provide usable science data. Anis heating the upper atmosphere, causing it to expand and create drag on the spacecraft, which does not have a propulsion system to keep it in orbit. Now decommissioned, NEOWISE is expected to safely burn up in our planet’s atmosphere in late 2024.
NASA extended the mission under the name NEOWISE until February 2011 to complete a survey of the main belt asteroids, at which point the spacecraft was put into hibernation. Analysis of this data showed that although the lack of coolant meant the space telescope could no longer observe the faintest infrared objects in the universe, it could still make precise observations of asteroids and comets that generate a strong infrared signal from being heated by the Sun as they travel past our planet.
By repeatedly observing the sky from low Earth orbit, NEOWISE created all-sky maps featuring 1.45 million infrared measurements of more than 44,000 solar system objects. Of the 3,000-plus near-Earth objects it detected, 215 were first spotted by NEOWISE. The mission also discovered 25 new comets, including the famed comet C/2020 F3 NEOWISE
NASA Headquarters NEO Surveyor (Near-Earth Object Surveyor Space Te NEOWISE Planetary Defense Coordination Office Planetary Science Division Science & Research Science Mission Directorate WISE (Wide-Field Infrared Survey Explorer)
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