Filmation produced Blackstar, that's why. And, as we know, Filmation loves to reuse things.
Was looking at the Blackstar postcards here:
And noticed this:
At first I thought it's Marlenas ship from "Teelas quest" but the copyright seem to state it's made in 1981.
Коможедапрочитанекапрочита:овимсајтомуправљајулуда циопседнутиконтролом.Јебаоихмателијебаоихскот .
The webmaster isn't a really good source, and tends to make claims that can't be verified.