40 years since the discovery of Charon

NASA's New Horizons mission has given us incredible images and insight into Pluto's moon Charon, but like many astronomical discoveries it was detected as a result of an anomaly. Charon was discovered on 22 June 1978 by US astronomer James Christy while examining images of Pluto. Ben Evans explores how this momentous find came to be.

charon-pluto-moon
Advertisement