On May 7, I was in Calgary for the joint book launch of the first two titles of the Shadowpaw Press Spring/Summer list, The Downloaded by Robert J. Sawyer and The Traitor’s Son by the …
It takes money to publish books, and most of that money flows out the door before the book is released and sales begin, so my publishing company, Shadowpaw Press, turned to Crowdfundr to help ensure …
This year’s Kickstarter to fund Shapers of Worlds Volume V, the fifth in the series of anthologies featuring science fiction and fantasy by authors who were guests on my Aurora Award-winning podcast, The Worldshapers, succeeded, reaching …
Well, I did it again: led the Seven-Sentence Short Story workshop (created by science fiction and fantasy author James van Pelt) at a writing conference, this time, Wordbridge in Lethbridge, Alberta. Here’s the story I …
Shapers of Worlds Volume IV, the fourth anthology featuring authors who were guests on my podcast, The Worldshapers, is now available everywhere, including directly from Shadowpaw Press. Here’s a handy universal URL with links to …
My publishing company, Shadowpaw Press, has three great titles coming out in the first two months of 2024, all of them science fiction or fantasy. The first two, The Good Soldier by Nir Yaniv and …
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A new class of time machine
Presented without comment, except the comment that I know when I don’t know enough to comment:
“A physicist at the Israel Institute of Technology in Haifa has proposed a new class of time machines that seems to avoid some of the difficulties inherent in other theoretical time machines. Like many time machine models, the new proposal requires gravitational fields that curve spacetime in ways that allow observers to travel to their own past. However, unlike previous proposals that have typically required exotic and improbable forms of matter, the new time machine core would consist of a toroidal vacuum embedded in sphere of normal matter. Important questions remain, but at the very least the material required to make the machine exists in our universe.”
Permanent link to this article: https://edwardwillett.com/2005/07/a-new-class-of-time-machine/
