# Which Voyager spacecraft “mutinied”, and what really happened?

The August 2017 BBC News Science in Action podcast The Algae that Changed the Earth includes other topics, including the following:

In August and September 1977, Nasa's probes Voyager 2 and Voyager 1 were launched. Since then the two spacecraft have been exploring our Solar System and interstellar space. Exceeding all expectations, the probes have taught us so much about our planets and beyond. The Voyager mission's chief scientist, Professor Ed Stone, looks back over Voyager's highlights.

After about 10:00 in the podcast he says (rough, amateur transcription):

...and we did have sort-of a mutiny at the time when the spacecraft went off and did what its programs told it to do but not what we thought it should be doing.

And it took us several days to get things sorted out to realize that what had happened; the spacecraft is that it had been subjected to the effects of the launch vehicle which had not been taken into account in the initial software that the spacecraft had been given.

But that all worked out and we were on our way to be ready for Jupiter which was less than two years away.