So, the curved shape that made the question mark could be a tidal tail. The image taken by the telescope, released last month, shows Herbig-Haro 46/47, which is a star forming cloud, Caplan explained.

No doubt it will get to the bottom of the question mark mystery very soon. Edited by: Clare Roth. Zulfikar Abbany Senior editor fascinated by space, AI and the mind, and how science touches people.