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Size 8 Planet in Orbit 0 at Alpha Centauri B

saundby

SOC-14 1K
http://www.nature.com/news/the-exoplanet-next-door-1.11605

Although nearly identical to Earth in mass, the planet is much closer to its star than Mercury is to the Sun, meaning that it is a scorched and barren rock.
I hope it's not the mainworld...with population A...tough to explain. ;)

Now to generate the rest of the system.
Finding a true Earth twin, circling a Sun-like star at a distance similar to Earth’s orbital radius around the Sun, would require another leap in sensitivity, to motions of just 9 centimetres per second.
 
Thanks for the link.

They announced the discovery of a planet in a four star system this week. There's a binary pairing with another binary pairing orbiting. The usual "We'll have to rethink how planetary systems form..." noises were made.
 
Yes. Bk6 says orbit 0 is DM-5... for maximum size 5.

Based on recent data (scant as it is) I've thrown most of these rules out the window. Maybe, after we have detailed data on a few thousand systems we'll be able to put together a rules set.
 
Based on recent data (scant as it is) I've thrown most of these rules out the window. Maybe, after we have detailed data on a few thousand systems we'll be able to put together a rules set.

We're at the point where we can invalidate most RPG's assumptions about system formation... but not yet to the point where we can come up with anything even vaguely likely to stand up long term.

After all, planetology was pretty stagnant through the 90's for lack of data, and most of the games are based upon the early 1980's model.
 
for the sake of this discussion, let just say this: All these strange and wonderful worlds they have discovered over the past two decades, are just strange and wonderful, nothing more.

Generating solar system under the present rule set should continue, because in the fictional world of Traveller these are the systems which have the best chances of having the minerals, atmospheric gases and organic material necessary to build a enclosed colony or world capable of supporting life.

I know it's a bit of handwavium but those extreme planets discovered by the astronomers aren't very likely to support life as we know it. Mining and resources can be derived from these new classes of planet and you might see a small colony there but I really don't see these worlds as the norm.
 
for the sake of this discussion, let just say this: All these strange and wonderful worlds they have discovered over the past two decades, are just strange and wonderful, nothing more.

Generating solar system under the present rule set should continue, because in the fictional world of Traveller these are the systems which have the best chances of having the minerals, atmospheric gases and organic material necessary to build a enclosed colony or world capable of supporting life.

I know it's a bit of handwavium but those extreme planets discovered by the astronomers aren't very likely to support life as we know it. Mining and resources can be derived from these new classes of planet and you might see a small colony there but I really don't see these worlds as the norm.

Go out and get a copy of Stephen Dole's Habitable Planets for Man, or Stephen Gillett's World Building ( for Science Fiction writers) and start using them as a basis.
 
Go out and get a copy of Stephen Dole's Habitable Planets for Man, or Stephen Gillett's World Building ( for Science Fiction writers) and start using them as a basis.

Dole's is a recent ebook rerelease of an unupdated 1964 paper.
Gillette's is 1996.

Neither come anything close to "current data" and Dole's likely is part of the problem in the first place. Mostly because the extrasolar planetary data postdates them both.

Haldane's maxim applies...
 
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