"The International Sun/Earth Explorer 3 probe was originally launched in 1978, and in the decades since it has studied solar winds and magnetic fields and even flown through the tail of Halley's comet in 1986. NASA used the craft for all kinds of studies over the years, until it was decommissioned in 1999."
"So what happens once communication is re-established with ISEE-3? With 12 of its 13 scientific instruments still working (at least as of 1999), the research team hopes to turn the spacecraft and its instruments over to the public by creating an app that allows anyone access to its data."
Keith's note: The project just passed the $50,000 mark. More than 840 people have donated - the vast majority making donations in the $10 - $50 range. For more information, have a look at the ISEE-3 Reboot Project crowdfunding page.