Estimating Surface Gravity on a Fictional Planet

WARNING: MATHS CONTENT!!! One of the things I had to do as part of the rework of my novel The Tau Ceti Diversion, is to try and work out the surface gravity of my fictional planets. From the Kepler data, there are two exoplanets located in the Tau Ceti system that are likely to be in the system’s habitable zone, or […]

Thank You Kepler! Thousands of New Exoplanets Now Confirmed

The number of new confirmed exoplanets – planets located outside our own solar system – continues to grow at an impressive rate. A massive amount of data is collected by space-based telescopes, which has to then be analysed and verified by astronomers. In the largest single announcement yet, NASA scientists have released information on 1,284 […]

Capturing our First Planetary Snapshots

  Kepler has confirmed more than 1000 planets outside our solar system, but so far only a few of Earth-like size and in the habitable zone — rocky planets with just the right temperature for liquid water. And none of those potential Earth-analogues have been observed directly, but through the interpretation of astronomical data, such […]

New Calvanni Review

Writer Tracy Joyce recently published a great independent review of The Calvanni. Here’s the whole review from Tracy’s blog: The Calvanni (Book 1, The Jakirian Cycle) by Chris McMahon – Monday 27th July 2015 “If you’re after a fast paced, complex adventure with detailed world building, politics and characters, then The Calvanni may be just what you’re looking […]

My SF Short Time Pump Just Published in Dimension6

I’m very excited to announce my SF short Time Pump has just been published in Keith Stevenson’s Dimension6 ezine! Click here to download a free, DRM-free epub or here to download a mobi file! The story was born from an intriguing SF idea and gradually took shape through various edits and critique sessions. I’m sure quite a few of […]

Tattoos in Fantasy

I’ve always been intrigued by tattoos. The awesome finality of having your skin inked has made me even more fascinated by traditions where tattoos carry a special meaning, such as the Polynesian cultures. In my fantasy world of Yos, tattoos carry very particular meanings. Men and women are tattooed with a totem on coming of age, which […]

What’s Your Favourite Fantasy Weapon?

One of the great things about writing fantasy is the fun you can have with weapons:) In my fantasy world Yos, where my three-book Jakirian Cycle is set, all metal is present as a magical crystal called a glowmetal. These glowmetals are a naturally occurring blend of light and metal that cannot be created or […]