The ultradrive had just one slight drawback: it set up a shock wave that made suns explode. Which made the problem of getting back home a delicate one indeed....
Time
Fuze
By Randall Garrett
Illustrated by Paul Orban
Commander Benedict kept his eyes on the rear plate as he activated the intercom. "All right, cut the power. We ought to be safe enough here."
As he released the intercom, Dr. Leicher, of the astronomical staff, stepped up to his side. "Perfectly safe," he nodded, "although even at this distance a star going nova ought to be quite a display."