Blecplam Two and a Half
From Tardis Wiki, the free Doctor Who reference
Blecplam Two and a Half was a location where the Thirteenth Doctor, Yasmin Khan, Graham O'Brien and Ryan Sinclair watched sentient nebulae in 3912.
There they encountered Leon Perkins's hand sticking out of a portal.
The Doctor previously saw them in an earlier incarnation. (COMIC: A New Beginning)