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The {{w|International Cometary Explorer|ISEE-3/ICE}} probe was launched in August 12, 1978 and tasked to study Earth's magnetic field and the solar wind. Before completing its original mission the probe was repurposed on June 10, 1982 to study the interaction between the solar wind and a cometary atmosphere. By flying through the comet {{w|21P/Giacobini–Zinner|Giacobini-Zinner}}'s tail, it became the first probe to do so. This put ISEE-3 in a {{w|heliocentric orbit}}. Its trajectory will bring it close to Earth on August 2014.
 
The {{w|International Cometary Explorer|ISEE-3/ICE}} probe was launched in August 12, 1978 and tasked to study Earth's magnetic field and the solar wind. Before completing its original mission the probe was repurposed on June 10, 1982 to study the interaction between the solar wind and a cometary atmosphere. By flying through the comet {{w|21P/Giacobini–Zinner|Giacobini-Zinner}}'s tail, it became the first probe to do so. This put ISEE-3 in a {{w|heliocentric orbit}}. Its trajectory will bring it close to Earth on August 2014.
  
The Deep Space Network (DSN) detected the probe again in 2008 because NASA mistakenly left its transmitters on. However, the probe was only transmitting the carrier signal at that time. A status check of the spacecraft has revealed that many of its instruments are still working and that it contains plenty of fuel.<ref>http://www.planetary.org/blogs/emily-lakdawalla/2014/02070836-isee-3.html</ref>
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The Deep Space Network (DSN) detected the probe again in 2008 because NASA mistakenly left its transmitters on. However, the probe was only transmitting the carrier signal at that time. A status check of the spacecraft has revealed that many of its instruments are still working and that it contains plenty of fuel.[http://www.planetary.org/blogs/emily-lakdawalla/2014/02070836-isee-3.html]
  
It was reported that the hardware to communicate with ISEE-3/ICE had been decommissioned. The Madrid DSS complex still has the special filter required to communicate with the ICE satellite, but because of frequency conflicts S-band uplink is not supported.<ref>http://deepspace.jpl.nasa.gov/dsndocs/810-005/101/101E.pdf</ref>
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It was reported that the hardware to communicate with ISEE-3/ICE had been decommissioned. The Madrid DSS complex still has the special filter required to communicate with the ICE satellite, but because of frequency conflicts S-band uplink is not supported.[http://deepspace.jpl.nasa.gov/dsndocs/810-005/101/101E.pdf]
  
On March 1 and 2, 2014 radio amateurs were able to detect the beacon signal from the retired NASA deep space probe ICE (International Cometary Explorer) using the 20&nbsp;m radio telescope at the Bochum Observatory (Germany).<ref>http://amsat-uk.org/2014/03/09/radio-amateurs-receive-nasa-isee-3ice-spacecraft/</ref>
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On March 1 and 2, 2014 radio amateurs were able to detect the beacon signal from the retired NASA deep space probe ICE (International Cometary Explorer) using the 20&nbsp;m radio telescope at the Bochum Observatory (Germany).[http://amsat-uk.org/2014/03/09/radio-amateurs-receive-nasa-isee-3ice-spacecraft/]
  
 
===Updates for ISEE-3/ICE===
 
===Updates for ISEE-3/ICE===
 
After this comic was published, it was established that an 18-meter satellite dish at the Johns Hopkins Applied Physics Laboratory does still have the right hardware.
 
After this comic was published, it was established that an 18-meter satellite dish at the Johns Hopkins Applied Physics Laboratory does still have the right hardware.
*April 4, 2014: Volunteers started a crowdfunding project on RocketHub to contact the probe and put it back into a {{w|halo orbit}} orbit around {{w|Lagrangian point}} L1.<ref>[http://www.rockethub.com/42228 "ISEE-3 reboot"]</ref>
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*April 4, 2014: Volunteers started a crowdfunding project on RocketHub to contact the probe and put it back into a {{w|halo orbit}} orbit around {{w|Lagrangian point}} L1.[http://www.rockethub.com/42228 "ISEE-3 reboot"]
 
*May 23, 2014: First contact to the probe was established.
 
*May 23, 2014: First contact to the probe was established.
 
*May 29, 2014: NASA gave them approval to try to achieve contact.
 
*May 29, 2014: NASA gave them approval to try to achieve contact.
 
*May 30, 2014: The project, led by [http://www.rockethub.com/profiles/68340-dennis-wingo Dennis Wingo] and {{w|Keith Cowing}}, had taken control of the spacecraft.
 
*May 30, 2014: The project, led by [http://www.rockethub.com/profiles/68340-dennis-wingo Dennis Wingo] and {{w|Keith Cowing}}, had taken control of the spacecraft.
 
*July 2, 2014: The reboot project successfully fired the thrusters for the first time since 1987. The engines on ISEE-3 performed a successful spin-up burn. The spin rate was changed to 19.76 rpm which is inside of the original mission specifications at 19.75 +/- 0.2 rpm.
 
*July 2, 2014: The reboot project successfully fired the thrusters for the first time since 1987. The engines on ISEE-3 performed a successful spin-up burn. The spin rate was changed to 19.76 rpm which is inside of the original mission specifications at 19.75 +/- 0.2 rpm.
**Further attempts to change the trajectory into an earth bound orbit did fail. Despite the effort from experts and amateurs via the internet<ref>http://spacecollege.org/isee3/we-are-borg-crowdsourced-isee-3-engineering-and-the-collective-mind-of-the-internet.html</ref> it was determined that the spacecraft had run out of nitrogen pressurant.
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**Further attempts to change the trajectory into an earth bound orbit did fail. Despite the effort from experts and amateurs via the internet [http://spacecollege.org/isee3/we-are-borg-crowdsourced-isee-3-engineering-and-the-collective-mind-of-the-internet.html] it was determined that the spacecraft had run out of nitrogen pressurant.
*Since the device was still communicating, and many of the instruments were still working, the ISEE-3 was intended to be used for the first citizen science, crowd funded, crowd sourced, interplanetary space science mission.<ref>http://spacecollege.org/isee3/announcing-the-isee-3-interplanetary-citizen-science-mission.html</ref>
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*Since the device was still communicating, and many of the instruments were still working, the ISEE-3 was intended to be used for the first citizen science, crowd funded, crowd sourced, interplanetary space science mission.[http://spacecollege.org/isee3/announcing-the-isee-3-interplanetary-citizen-science-mission.html]
 
*{{w|International_Cometary_Explorer#Contact_lost|Contact was finally lost}} on 2014-09-16.
 
*{{w|International_Cometary_Explorer#Contact_lost|Contact was finally lost}} on 2014-09-16.
  
 
See [http://spacecollege.org/isee3/ Space College: ISEE-3 Reboot Project Archives] for the coverage of this amazing project.
 
See [http://spacecollege.org/isee3/ Space College: ISEE-3 Reboot Project Archives] for the coverage of this amazing project.
 
== References ==
 
{{reflist}}
 
  
 
{{comic discussion}}
 
{{comic discussion}}

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