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| Coronet paperback, 1973. Cover artwork by John Holmes. |
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| Rear cover and synopsis. |
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| Panther SF paperback, 1975. Cover illustration by Tom McArthur. |
Rear cover synopsis:
"Earth is dead - murdered from the depths of space. But how? And by whom? Poul Anderson, as versatile as ever, admirably confirms with this tale of interplanetary terror that he possesses one of the most awe - inspiring talents in the whole field of science fiction..."
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| Ace paperback, 1978. Cover illustration by Michael Whelan. |
Rear cover synopsis:
"For many years the starships of earth searched the heavens for places where men could live. Many planets were found, but always something was wrong: too hot; too cold; atmospheric contaminants; poisonous biochemistry; intelligent natives - something. At last a deep-space survey vessel has reported a planet that seems perfect, an uninhabited paradise where people can roam free. But the first Troas Expedition never returns. And now the crew of the De Gama must find out why, or mankind will lose the stars forever..."
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| Ace paperback, 1967. Cover by Kelly Freas. |
"When the starship Meteor crash-landed on a strange world orbiting a solitary sun in the vast darkness outside the galaxy, her crew of Earthmen had no idea of what to expect. The planet was Earthlike in gravity, air, animal and vegetable life - but what of the native races they glimpsed from a distance?
What kind of culture would evolve on a planet whose sky was dominated by the glow of an entire galaxy - and with no other stars save its own dim sun? What kind of gods would they worship?
The Earthmen had to find the astounding answers to these questions on a planet split by a world-wide war."
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| Universal paperback, 1978. Cover by Les Edwards (thanks, Staz). |
"WANTED:
terrestroid planets, habitable but uninhabited, clean of major sicknesses, rich enough to support colonists without outside help.
FOUND:
in almost a generation, nothing.
Then a shipful of astronomers chanced on the troas-illium system. The da gama had set out, but never come home. Now, seven years later, the henry hudson is due to leave on the same mission..."
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| Sphere SF paperback, 1984 reprint. Cover by Melvyn Grant. |
"Jack Havig seemed like an ordinary man. But since he was a small child he had kept a frightening and exhilarating secret. He was a born time-traveller - a man who could cross the centuries just by willing himself to. Over the years, he had investigated the past - from Christ's Jerusalem to the America of the Indian tribes, from Athens to mediaeval Constantinople. And, seeing the future, he found meaning in life and a reason for his gift. He sensed that there were others like him. Men and women who must fight for man's future. Because that future threatened the extinction of the whole of human civilization..."
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| Sphere SF paperback, 1978. Cover artwork by Peter Elson (thanks, Yvan). |
"THE DOOMED PLANET
The gigantic planet of Mirkheim was gone - blasted and vaporised by a supernova. But its core had survived the holocaust, and now, transmuted, it was the only source of certain vital supermetals. David Falkayn, agent and troubleshooter for the powerful Polesotechnic League, governors of the Terran Empire, had plans for Mirkheim. But the Baburites - an unscrupulous alien race - were one step ahead of him and had claimed the priceless minerals as their own. The conflict cloud mean only one thing - war, on a titanic scale - unless Falkayn could turn the tide and negotiate a peaceful agreement. But with the Baburites, that was a near-impossible task."