Authentic Science Fiction Monthly, No. 51 — page 65: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

AUTHENTIC SCIENCE FICTION shown that light is deflected by a gravitational field. Rela- tive to a universal time scale this implies that the light must be slowed down in the region of high gravitational potential. Let it be further assumed that the light velocity decreases when it is approach- ing, and increases when it is leaving a region of high gravitational potential, and this will be a sufficient ex- planation. For the light quan- tum has energy and therefore mass. It will thus form its own gravitational field. This would speed up the van and slow down the rear of the wave packet. Only very very slightly maybe, but the effect after, say, a million years could be quite noticeable, and give us just the observed red shift without an expanding universe. for young readers in particular . . . . Heinlein’s STARMAN JONES A universal favourite of adult science fiction readers, Robert Heinlein has now produced a superb space travel story for younger readers. This book, handsomely produced with illustrations by Clifford Geary, reasonably priced, will be the favourite choice for any boy or girl. 7s. 6d. net for every science fiction reader . . Arthur Clarke’s EXPEDITION TO EARTH Britain’s leading science fiction writer is at his best in the eleven thrilling stories in this book—the first collection to be published. 8s. 6d. net SIDGWICK AND JACKSON LIMITED * A postcard to 44 Museum Street, London, W.C.1, brings details of the Science Fiction Book Club. comiclooks.corn