The planet Mercury. Forty million miles from the Sun, following his eccentric orbit, one side of him solid with the frost of untold cycles of time, the other molten whereon metals boiled and sizzled in the incredible heat of the sun. A world utterly dead, a terror-planet, but such is the spirit of adventure in Man that even here he was exploring...

What happened to Walter Cardish, epicenter of a freak storm in the Lake District? The source of the strange lightning that struck him was a complete mystery, but only until its curious mental effect on Cardish became apparent.

From the ether came mysterious messages announcing that a hitherto unknown Englishman had conquered space, flown to Venus, and is now on his way back to Earth. The fact that science's most highly developed range and frequency finders are unable to pinpoint the actual source of the voice is looked upon as absolute proof that they are hearing from outer space. The aggressive and autocratic quality about the way in which the eccentric Ardath Steele makes his proclamations not only annoys Bett...

Claire Escott had ignored her father's warning against involvement with her fiancé Mark Rowland. However, she little realised the extent of the scientist's corroding ambition when he invents a method of matter transmission. And it was not long after their marriage that Rowland's ruthless pursuit of a scientific empire encompassed a horrifying murder. But that was only the start of things. Mark's scientific genius and obsessive ambition to go one step further eventually led to the conquest ...

Max Harborn and his wife Eva, the first space explorers to visit Mars, discover an almost dead world of endless deserts. Lifeless, that is, except for a few curious Martian moths, paradoxically existing in the absence of vegetation and water. Two of the living moths are brought back to Earth, along with samples of rocks, sand, and atmosphere. But once back on Earth, the two moths, male and female, escape from captivity, and begin breeding at a prodigious rate. The alien grubs are capable o...

An intense human quietness was upon the laboratory. Annexed though it was to the rambling reaches of the Research Council Building, wherein experimental analyses from atomic power to weed-killer were taking place twenty-four hours a day, no external sounds penetrated the proofed, heavily-insulated walls...

Did it ever occur to you what might happen if you found yourself compelled to tell the truth for the rest of your life, because all power of telling a lie was gone? It would seem that since a great bulk of our society is built upon sham and pretense, things would come to a pretty pass if the power of untruths were destroyed.

Jeremy Clyde is a young scientist who discovers that Time is a circle, and that deep within the human brain is a memory 'hangover' of future and past events. He carries out an experiment on himself and succeeds in mentally projecting his body 2,000 years into the future. Here he learns that his arrival in 3950 has been anticipated, and incredibly, he is appointed as the nominal ruler of the four inhabited inner planets, Mercury, Venus, Earth and Mars. But he discovers he is only a puppet f...

That a planetoid of solid gold might exist in the Solar System is not beyond scientific possibility, insofar that our own Earth is basic nickel-iron, so might another world - of smaller size perhaps - be of basic god. Such a world is ZK/70, a planetoid in the region of the Asteroidal Belt.Why, when he discovered the golden planetoid, did not Professor Brailsford bring back with him enough of the precious metal or gold dust to make himself financial dictator of the Earth? Why? That ...

A super computer asked to answer the question "what is time?" freezes Earth and everything on it in a single moment in time.

In the year 2150 A.D. immortal Atlanteans living underground on the planet Saturn help a stranded astronaut and his girl friend overthrow the ruthless Earth dictator who tried to kill them.

Dayton Raslor, owner by inheritance of a successful spaceship corporation, is imprisoned in a penal colony on Jupiter for a crime he didn't commit. He had been framed by three ruthless industrialists on Earth who are plotting to take over his Spaceline. Raslor manages to escape from Jupiter with the aid of the son and daughter of his company's financial director, who had been driven to suicide after also being framed by the same industrialists. The trio plot their revenge by forming "The B...