Tag Archives: Slow Train to Arcuturus

Slowtrain to Arcturus

I was just re-reading the start of this. I really think that sequel is calling…

____________

From Remote probe report 36e, returned to Sol; beamback 2793 AD

…appear to be a bi-pedal hominid spacetravelling species, occupying the second planet of G09 – 034T…
_____

One of the biggest faults with the concept of a one-shot slower-than-light colony mission was the proportion of the time spent accelerating and slowing down. Take Barnard’s star for example. At 5.9 light years away, with a ship capable of 0.3 lights, a plausible speed for a ramscoop… you’d be there in 19.7 years, right? Wrong. It all depends on acceleration. High-speed acceleration is expensive and creates engineering stresses, to say nothing of the stresses on the biological matter. A slow steady push is best. You accelerate slowly for at least a third of your trip. And then you have to slow down again. If you’re going to visit a number of systems, this adds HUGELY to travel time. What’s more,  the momentum you’ve lost has to be built again. Momentum is expensive. It is energy. Energy, whether taken from solar-pumped lasers or a-bombs is a consumable. Even if it is ‘free’ solar power, it still costs to get it into a usable form, and once it has been used, it is gone. A metal Space habitat has finite lifespan – but it is an enormous one. The depreciating cost, amortized over its space-life, divided by its carrying capacity, makes it the cheapest vehicle humanity ever built. However: Building the momentum needed to travel between the stars is too expensive to waste on ‘one stop’ journeys, or even on leapfroging between stars. Once the colony ship accelerates it must never slow down again. Never. It will drop space habitat modules at each sun. But it must just keeps cruising slowly along, a slow train to the stars.

From SLOWTRAIN: THE STARS WITHIN OUR GRASP, Conquist, A., Mordaunt Scientific Press, NY. 2090.
____

“Do you want to colonize planets? Or do you want to colonize space? The former is much less practical.”

Author unknown
________________________________________________________________

They looked like a string of tiny jewels. Jewels racing across the heavens. The astronomer waited, hardly daring to breathe.
Precisely at the predicted time there was a brief flare of light.  He hastily got up from his seat behind the hi-res screen. They had to get a move on to be ready in time! It was only fifteen years away.
That was a short time by interstellar travel standards. A bit long for him though… Weight would be a problem in the interception ship. He’d be changing sex about then, with all the weight-gain that implied. Oh well, there were hormones you could use. They did shorten your life expectancy — but that wasn’t going to be a problem. The people going on this trip didn’t have much of a one. He’d have to start recruiting. The crew would need to be specialists in two fields each, and more if possible. And they would have to be at least technically insane.

Advertisements

2 Comments

Filed under books, Writing

The arrogance and the ignorance

http://www.goodshowsir.co.uk/2010/10/a-slow-train-to-arcturus/

Yeah well. Not my fave cover, although to be fair I was asked for a description of the Aliens and their space suits by the artist (it’s supposed to be a hi-viz suit for a species that is red-green colourblind).  It’s not quite what I envisaged which was purple and dayglo lime greeny yellow/ 🙂 It’s a fair comment, and goes with the turf, and the luck of the draw.

Rant alert: It was however the guy who decided to have go at it because it was a Baen book who really got up my nose and itched. He/she plainly has no idea what the book is about, or who the authors are. However: We must be some kind of far right nutters to be abused.  This is on a charming par with deciding someone’s skin colour means they’re stupid or dishonest. Baen, to their credit, are possibly the ONLY major house who can fairly be said have a tolerant open policy to who and what they publish. Yes, they’ve published the far right… and the far left. Find another major sf/fantasy publisher who can honestly say that. So: for the only publisher doing the right and honorable thing… the arrogant and ignorant get a free pass to have a go at the authors and their books. Heck, it’s easy enough to shred my work, and that is fair enough.  But have the grace not come come up with the equivalent of ‘all blacks are stupid’ when you do it. At least read some of it. This on the other hand was a fine parallel to the guys who had never read Harry Potter but tried to get it banned because they’d heard it was Satanist.

Baen’s attitude is something anyone who believes in free speech should praise and respect them for -regardless of which party they support.  But to the type who feel that free speech and tolerance are only important when it applies to them (and you get them on the left and right – on the left they produce Pol Pot and the right Adolf Hitler) they’re bad because they didn’t take the ‘right’ side and discriminate against.   That’s neither liberal, tolerant, nor a belief in free speech.  Tolerance is and always will be: when it something you do not approve of, and is not said by someone you like or approve of, and you still support their right to say it.   ‘I disagree with what you say, but I will defend to the death your right to say it.’  This, and not blinkered narrow bigotry (no matter if that bigotry is in favor of NeoNazis or Gay Liberation) is intrinsic to Western Liberal Philosophy. Without we’re just a shade of totalitarian intolerance. And it doesn’t matter who you are being intolerant of.

rant endeth

Leave a comment

Filed under books, publishing, Writing