Murray Leinster,
The boomerang circuit
(1947)
“ Men had conquered one galaxy and now started on a second, but never yet had they destroyed a planet. Never yet had they even moved one. But nevertheless, only thirty-six hours ago the planet Ades had revolved about its sun and men and women had strolled into its matter-transmitter with no hint of danger, and between two seconds something had happened.Even had the planet been shattered into dust, its remnants should have been discoverable. And surely a device which could destroy a planet would have had some preliminary testings and the galaxy would have heard of its existence! ”
