Sargasso Of Lost Starships, Continued

(This Planet Stories cover advertises "Sargasso of Lost Starships" (see here) as "a Black Nebula story by Poul Anderson" as though there were a series of this name.)

The Imperials are called "Terrans" more often than "Solarians." Perhaps both English words translate an Anglic term that can be used in either sense?

Helena Jansky, commanding HM Ganymede, is from Valor, one of several inhabited planets that are mentioned only once in Anderson's Technic History. Valor is Sirius A IV, the fourth planet of the brightest star in a binary or multiple system. Exercise: google Sirius.

Ansans:

"'...fought Shalmu when the greenies wanted to take what we'd built, and then we made friends with them.'"
-Poul Anderson, Rise Of The Terran Empire (New York, 2011), p. 383.

Shalmuans as aggressively acquisitive does not fit with what we know of them from a perhaps more reliable source later in the Technic History. However, the Ansans might be more than capable of misrepresenting the cause of a past war?

A nebula thought to be haunted? A whole nebula? But then the whole universe is haunted to those who perceive it as indwelt by a mysterious and awesome presence.

This nebula is a spherical dust cloud a light year in diameter ten parsecs from Ansa towards Sagittari, the least and outermost of the clouds concealing the Galactic Center. Natives of planets on the edge of the Nebula either worship it or regard it as the home of the gods. Natives of Heim sacrifice food, fur, tools etc which their gods come and take...