The NASA/ESA Hubble Space Telescope has recently spotted an unusual dark feature in Jupiter’s cloudy atmosphere that had not previously been detected. Scientists suspect that the feature is the result of a turbulent flow of dark material from Jupiter’s interior, which has been forced towards the planet’s cloud tops. The jet’s composition remains unknown, but may contain material that was previously too deep inside the planet to be seen in visible light. While it is impossible to determine the cause of this feature at this point, further analysis of the find could unlock new insights into Jupiter’s interior.