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After being proposed for cancellation under President Trump's FY 2018 budget, it was restored by Congress.<ref name="PACE restored">{{cite web|last=Foust|first=Jeff |url=https://spacenews.com/nasa-receives-20-7-billion-in-omnibus-appropriations-bill/|title=NASA receives US$20.7 billion in omnibus appropriations bill|publisher=SpaceNews|date=22 March 2018|access-date=15 March 2021}}</ref> The PACE project is managed by NASA [[Goddard Space Flight Center]].<ref name="Goddard">{{cite web|url=https://www.nasa.gov/press/2015/march/new-nasa-mission-to-study-ocean-color-airborne-particles-and-clouds|title=New NASA Mission to Study Ocean Color, Airborne Particles and Clouds|date=13 March 2015|access-date=15 March 2021}} {{PD-notice}}</ref> The main instrument and bus were designed and built at Goddard Space Flight Center.<ref name="NASA20160720">{{cite web|url=https://www.nasa.gov/feature/goddard/2016/pace-will-uncover-new-information-about-ocean-health|title=NASA's PACE Mission Will Uncover New Information About Health of Our Oceans|publisher=NASA|date=20 July 2016|access-date=15 March 2021}} {{PD-notice}}</ref>
On 4 February 2020, NASA announced the selection of [[SpaceX]] to launch PACE on a [[Falcon 9]], at a total cost to NASA of US$80.4 million, including the launch service and other mission-related costs.<ref name="SFN20200205">{{cite web|url=https://spaceflightnow.com/2020/02/05/spacex-wins-contract-to-launch-nasas-pace-earth-science-mission/|title=SpaceX wins contract to launch NASA's PACE Earth science mission|last=Clark|first=Stephen|publisher=Spaceflight Now|date=5 February 2020|access-date=15 March 2021}}</ref> The total cost of the mission is $964 million, which includes spacecraft construction, launch, and operations.<ref name=ars/> PACE successfully launched on 8 February 2024 at 06:33 UTC.<ref name="nasa-20231211">{{cite press release |url=https://www.nasa.gov/news-release/nasa-invites-media-to-launch-of-new-mission-to-study-oceans-clouds/ |title=NASA Invites Media to Launch of New Mission to Study Oceans, Clouds |work=[[NASA]] |date=11 December 2023 |access-date=11 December 2023}}</ref> On 17 April 2024 it was announced that first operational data was received.<ref>{{Cite web |date=2024-04-17 |title=NASA’s Near Space Network Enables PACE Climate Mission to ‘Phone Home’ - NASA |url=https://www.nasa.gov/technology/space-comms/nasas-near-space-network-enables-pace-climate-mission-to-phone-home/ |access-date=2024-04-18 |language=en-US}}</ref>
== History ==
== Science overview ==
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Unusual for an east coast launch, this was a [[polar orbit|polar launch]] that placed the spacecraft into a [[Sun-synchronous orbit]], a type of orbit commonly used on observation satellites because it sees a given spot on Earth at the same time every day. These launches are usually carried out from [[Vandenberg Space Force Base]] in California, to prevent debris from landing on populated areas, but SpaceX resumed polar launches from Florida in 2020 because of its ability to land the Falcon 9 booster safely and the introduction of the [[Autonomous Flight Safety System]] on the Falcon rockets. PACE was the first US government mission to launch to a polar orbit from Florida since 1960. The choice to launch PACE from Florida was simply a matter of convenience, due to it being located closer to the Goddard Space Flight Center, where the mission is operated.<ref name=nasaspaceflight>{{cite web|url=https://www.nasaspaceflight.com/2024/02/pace-launch/|author=Justin Davenport |title=Falcon 9 launch PACE science satellite for NASA|work=NASASpaceFlight|access-date=8 February 2024}}</ref><ref name=spacenews>{{cite web|author=Jeff Foust|url=https://spacenews.com/falcon-9-launches-pace-earth-science-mission/|title=Falcon 9 launches PACE Earth science mission|work=Spacenews|access-date=8 February 2024}}</ref><ref name=ars>{{cite web|url=https://arstechnica.com/space/2024/02/trump-tried-to-kill-it-but-nasas-new-climate-satellite-is-finally-in-orbit/|title=NASA launches a billion-dollar Earth science mission Trump tried to cancel|author=Stephen Clark|work=Ars Technica|access-date=8 February 2024}}</ref>
The cost of the launch was $80.4 million.<ref name=nasaspaceflight/> After launch
== See also ==
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