Stellar Geography

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The local area of space in which Earth is located is generally referred to as being remote, unregarded and generally insignificant and unimportant. Hmm.

Since the nearest stars to Sol include Alpha Centauri (the local planning office) Barnard's Star (including a space dock capable of refitting Vogon Constructor Ships) Sirius (home of the Cybernetics Corp) and Arcturus (home of the Megafreighter fleet) this area must be considered heavily industrialized.

So all those aliens must really hate Earth to never visit.

Other than that, we are located about two-thirds of the way out of the Milky Way galaxy, a giant spiral galaxy, possibly barred, with a mass equivalent to about a hundred billion type G stars. The Sun, which is just such a star, is therefore totally unimportant. The Galaxy is around about a hundred thousand light years across. Monty Python once did a song about it.

At the centre of the Galaxy there is a suspected black hole, which we can't see for two reasons: 1) there's too much rubbish in the way, stars, dust, nebulae etc. and 2) it's black. And space is black. So we can't see it.

What else?

The Earth, which is where most people are more or less permanently based, is a big rock pretty near the middle of the Sol system, as things go. In fact it's the biggest rock in the whole place. If we take the long view you wouldn't be able to see Earth against the glare of the Sun. There are three other rocks nearby, but none of them are as big.

There's also a big rock in orbit, and two little rocks orbiting one of the other three rocks (are you getting all these rocks?) Further out there's a ring of rocks. Further out still there are four big balls of gas, all of which have rocks of varying sizes in orbit, and still further out there's another load of rocks, but these ones are icier than the rocky ones further towards the Sun. Even further out there may be a sphere of big lumps of ice, and probably some more rocks. Lumps of ice and rock tend to play a major part in space exploration. They tend to get named after gods, nymphs, or Shakespeare characters, basically because astronomers would get bored talking about 'unremarkable rock number three million'.

The stellar equivalent of 'boring rock' is 'red dwarf', and there are plenty around. Loads of small, cool, totally dull red dwarfs. To be honest, if you had a spaceship and could explore anywhere you wanted to go, you'd very rarely find something exciting. In general, you can expect rock and ice orbiting red dwarfs. It says something about the mentality of people that the world stopped to watch some guy step out on the surface of a rock other than the Earth, and that all the guys at Houston and JPL jump up and down and go 'hooray' when yet another robot manages to land on a rock without breaking into a bazillion pieces.


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