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This puts things in perspective.

http://www.bbc.com/future/bespoke/space_infographic

Despite being a BBC site, it is not available to UK residents!

For the next week or so, Venus and Jupiter will be visible after sunset for a few hours. Venus is very bright.

Saturn will also be visible in the eastern sky.
If you have a telescope, you can see Saturn's rings and some of its moons.

Interesting link. Thanks for sharing.

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Nice link

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My wantlist for Malta Revenues

Not sure that it does.

This puts the limit of the solar system at 20 light hours.

Long period comets or asteroids could be at the Lagrangian point between our sun and the next closest star Alpha/Proxima Centauri and still be part of our solar system ... which puts the limit closer to 2 light years ... almost 900 times as far as the model suggests.

Could be even further in a different direction.

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A man might as well marry ... if he finds a good wife he will be happy ... if not, he will become a philosopher.
Collecting Greater New Guinea & Macropods (Kangaroos & Wallabies).

Here's one take on not just the Solar System, but the Galaxy as a whole (from Monty Python):

"Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour,
That's orbiting at nineteen miles a second, so it's reckoned,
A sun that is the source of all our power.
The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm, at forty thousand miles an hour,
Of the galaxy we call the 'Milky Way'.
Our galaxy itself contains a hundred billion stars.
It's a hundred thousand light years side to side.
It bulges in the middle, sixteen thousand light years thick,
But out by us, it's just three thousand light years wide.
We're thirty thousand light years from galactic central point.
We go 'round every two hundred million years,
And our galaxy is only one of millions of billions
In this amazing and expanding universe.

The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go, at the speed of light, you know,
Twelve million miles a minute, and that's the fastest speed there is.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here on Earth."

True, there are comets that pass through the solar system which are also part of it. I think you are referring to the Oort Cloud as being the edge of the solar system. The model adopts the heliosphere as the edge.