Laser Communication with Spacecraft

New technology promises to take laser communication with spacecraft from science fiction to science fact. This technology offers a new answer to a 60-year-old problem: you have had your launch and your shiny new space probe has made it to orbit without being ripped to shreds by tons of exploding chemical fuel, but once it’s up there, how do you talk […]

Our Closest Earth-like Planet

In an amazing stroke of cosmic luck, our closest Earth-like planet Proxima b turns out to be orbiting our closest star, Proxima Centauri, only 4.2 lightyears away! The Kepler space telescope has been expanding our knowledge of exoplanets – planets outside the solar system – for years now. The number of confirmed exoplanets from Kepler now […]

Going Faster Than Light

Going faster than light is the Holy Grail of space travel, and is often depicted in science fiction. It seems as easy as flicking the switch to jolt the ship into Hyperspace. I mean, it worked for Han Solo, right? It was Einstein who first postulated the idea that the speed of light is constant in […]

Evolution, Insects & Oxygen

One of the key elements of my novel the Tau Ceti Diversion was the unique setting I imagined for the story. Specifically, an alien planet where the top evolutionary niche was filled by an intelligent insect race.  So I needed to think about insect evolution, and how that evolution was affected by the amount of oxygen those insects […]

Mercury’s Tidally Locked Orbit

Mercury is weird Mercury’s tidally locked orbit is a good example of how the universe always throws astronomers a few surprises. The planet is tidally (or gravitationally) locked to our Sun, but this is not the typical “synchronous” tidal locking with a 1:1 ratio of rotation and orbit, such as the Moon and Earth, with the […]

Day Side & Night Side – Tidal Locking of Planets

So what is tidal locking? Our Moon is tidally locked to the Earth, always presenting the same face to us. That doesn’t mean that the Moon is stationary, far from it, it just means that it takes just as long to rotate around its own axis as it does to revolve around the Earth. The […]

Postcard from Jupiter – First Snaps from Juno

The Juno spacecraft’s JunoCam camera is now operational, and is sending data back to Earth. The camera was switched on six days after the exploration craft entered orbit around Jupiter. Although the first high-resolution images are weeks away, we have our first assembled image of the planet. The shot below was taken at a distance […]

Atmosphere on a Fictional Planet

So you’ve got your plot sorted out, and maybe some idea of the mass, radius and gravity of your fictional planet. The orbit puts it in the ‘sweet spot’ goldilocks zone where liquid water can be present on the surface. What sort of factors go into whether that planet, presumably an Earth-like rocky world, will have […]

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 […]