Story & Art: Mac Raboy
Original run: 1958-01-19 to 1958-03-09
Summary: Answering an emergency summons, Flash and Zarkov learn that Earth is being bombarded by interplanetary missiles from the outer region of the galaxy and manage to locate the launches to the planet Neptune.
Volunteering to pilot a fast ship to the planet to avoid a catastrophe, Flash’ main brief is to act as a peace envoy, but should diplomacy fail and a missile strike prove the only option, Flash is prepared to carry out a suicide mission...
(Source of summary: www.ipcomics.net)
All credits go to "spax".