Victor Appleton

In book 23 of this series, the colonists on Mars have been living in peace and relative comfort, until it is discovered that one of the two small moons racing overhead, Phobos, seems to have dropped in altitude and is continuing to come closer. Since this was not suppose to be at a rate of more than a few inches a year, but is in the hundreds of miles, this is a great worry to them. And, to Tom Swift.He arrives on Mars and uses his repelatron-powered ship, The Challenger, to push the moon back up into position only to find that it starts coming back down. An investigation on the surface of Phobos shows that it has a higher gravity than it should, and the only reason Tom can figure is that the former Space Friends must have planted one of their gravity generating stones somewhere. But, where?And, once he finds it, how can he go about digging more than a hundred feet onto a moon that is barely held together and is composed of rocks and dust gathered over more than a million years. One false dig and the entire thing could break apart.The Space Friends are of no help as they have all but disappeared. So, Tom sets out to do the impossible; replace Phobos in its rightful position once and for all times so the colony can go back to being safe.

The fifteenth ( ) novel in the New TOM SWIFT Invention Adventures series.Just two years ago Tom Swift and his best friend, Bud Barclay, journeyed through a wormhole and nearly lost their lives investigating a black hole phenomena. After returning Tom sent an unmanned reconnaissance probe back there to keep an eye on things.The time has come to replace it before it "dies." But, when he does the first of the videos sent back reveal something so startling that Tom isn't certain what to believe. The probe shows him something Tom knows had to be in the past.What might it mean? The first thought he has is some sort of time fluctuation has occurred. He is hesitant to refer to it as "time travel."But, what if that is exactly what it is? Is it something that can be replicated and used on Earth. Or, can the source of the phenomena be taken from its location back to Earth? Tom can only imagine the possibilities and sets out testing in until a personal tragedy forces him to try something radical.It isn't for the weak at heart, and it isn't something he wants to do, but he must.

Tom Swift is the main character of five series of American juvenile science fiction and adventure novels that emphasize science, invention and technology. First published in 1910, the series total more than 100 volumes. The character was created by Edward Stratemeyer, the founder of the Stratemeyer Syndicate, a book-packaging firm. Tom's adventures have been written by various ghostwriters, beginning with Howard Garis. Most of the books are credited to the collective pseudonym "Victor Appleton". The 33 volumes of the second series use the pseudonym Victor Appleton II for the author. For this series, and some of the later series, the main character is "Tom Swift, Jr." New titles have been published as recently as 2007. Most of the various series emphasized Tom's inventions. The books generally describe the effects of science and technology as wholly beneficial, and the role of the inventor in society as admirable and heroic. Translated into many languages, the books have sold more than 30 million copies worldwide. Tom Swift has also been the subject of a board game and a television series. Several famous people, including Steve Wozniak and Isaac Asimov, have cited "Tom Swift" as an inspiration. Several inventions, including the Taser, have been inspired allegedly by Swift's fictional inventions. "TASER" is said to be an acronym for "Thomas A. Swift's Electric Rifle."