Celestia Forums

LOL.
Just for the fun of it I just let some piece of software count the applications on my Mac. Turns out I have about 480 of them on the harddisk.

Thanks Chris :) Very nice picture indeed, by the way.
Did you buy a MacBook (Pro)?

I think he means that the ocean plates continuously renew themselves by being created at ridges and 'destroyed' by subduction when they reach the continental shelve.
The complete journey from the middle to the edge takes several tens of millions of years on average.

Where there is more dust, rocks and other pieces of solar system (e.g. ecliptic plane) there is less opportunity to see stars. Maybe the sine represents the region that is furthest away from the ecliptica.

Thanks Guillermo! Beautiful skyline indeed.
By the way, what's your estimate on the comet's current brightness?

Thanks! I was waiting for this :)

This is very sad indeed.

Thanks Guillermo.

Some translator:

When executing the Celestia program, the galaxies have too much brightness and spoil the bottom of the sky.

Now, that's one happy post!
I agree wholhartedly. Happy new year to all of you!

Avpruler, could you please clarify the folowing?
You've said this:

its in the same spot all night every night, and it moves along with the stars.

These two statements can't be true at the same time. If something moves with the stars, it can't be in the same spot every night.

Unfortunately what you describe is physically impossible. Only circumpolar stars can be visible all year round.
When you are on the northern hemisphere (as you seem to be from your description) :) only stars close to the northern celestial pole can be circumpolar. Your "star" is in the south east.

Thanks Chris!

chris wrote:Hard at work on Mount Celestia . . .

This is funny, I'm still chuckling :lol:

You wouldn't believe how long our summer has lasted this year. Only a few days ago parts of the country hit 20 degrees centigrade. About half of the trees are still bearing leaf. In fact, this autumn is the warmest since we started recording data (about 300 years ago) The previous (mean temperature)...

Getting us back to the original subject :) And some self-advertising, of course. I've just posted about 20 pictures from my hometown Leiden - original subject of this thread - in my flickr stream. The pictures were partly taken along the same route I walked with Chris when he came to visit Leiden. h...

I couldn't find the appropriate passage in Rendezvous with Rama. But I found this one: But the air-pressure is up, as we expected - around three hundred millibars. Even with this low oxygen content, it's almost breathable; further down there will be no problems at all. That will simplify exploration...

When the diameter is big enough though, Clarke's assumption is probably correct. A radius of 1 to 2 km's will however certainly not be enough.

When it rotates around the hub axis, because of friction air will start to rotate as well and thusly will be forced in the direction of the walls. At least, that's was more or less Arthur C. Clarke's explanation in his novel "Rendezvous with Rama".

danielj wrote:I??m only a final user.

But you are not the only final user. 8)