Crowd-funding the engineering and money to bring a 1970s NASA space probe back to life.
The idea is brilliant. The probe, ISEE-3, has functioning instruments. It just hasn’t been operated since the 1980s. If they can get the funds to pay for the effort, they will provide scientists a space probe for pennies.
Putting a spacecraft back in the orbit it was intended, thirty-one years later.
The spacecraft, ISEE-3, was intended to study the solar wind and the connection between the Sun and the Earth. In 1986 it was diverted instead to take a look at Halley’s Comet. Now there is an opportunity to return it to its original task, assuming engineers can wake it up after three decades.