Notes: Data from Amazon UK, Kobo (GB) and publisher's site between 2020-10-30 and 2020-11-07. Although product listings at all of the aforementioned sites list this under the original title of "Andromeda Breakthrough", both the cover image and title page (as visible via Amazon's "Look Inside" preview) show the title prefixed with "The". This is perhaps in error, as an omnibus published on the same date by the same publisher uses the "The"-less version on the title page. The title page of this standalone publication also has an "SF Masterworks" logo, although only the aforementioned omnibus is part of that publication series.