The Measure of a Man by Randall Garrett

Alfred Pendray has one chance to warn Earth before an enemy weapon turns the Sun into a killing firestorm, but every path home carries a price no sane man would willingly pay. Drifting alone through a shattered warship, he faces a calculation that grows more terrifying the closer he gets to solving it. The Measure of a Man by Randall Garrett. That’s next on The Lost Sci-Fi Podcast.