Celestia Forums

i don't know what the original poster ment to ask, but my question is: do jovian moons really cast so sharp shadows on jupiter? i mean, jupiter has no solid surface, and i thought those clouds or whatever are not that "definit" or flat or what. are they?

mrzee wrote:I'm being told that the escape velocity is a the same for powered craft and non powered craft.

forget it. escape velocity is of course a starting velocity. you need to throw a stone this fast.

do you know the exact UTC when the picture was taken?

it would be interesting to compare it to celesita's version

you can see whatever direction you need while flying with F1..Fn buttons

I think that if the image is small, it's ok. but there are some here(I dont want to give names) that are very big. I my self put a big image, and then I made it samller. for my taste, ElPelado's sig img is too big. bigger then the post itself. and for the whole sig, it is three times as big as the ...

How easy/difficult/impossible would it be to introduce a way to generate a 'sky map' from a location on a planet? By which I mean, produce an image that shows what one would see in the sky from that location, like what you see in astronomy magazines? (it'd be a 360 degree image of everything above ...

hi, im currently devaloping my own solar system simulator, im not sure at this stage wether to make it open source or not, altho im tempted to. Im trying to get my program to synchronize with the calender so that it will be in the correct orientation at any given date. Say if i tell the program tha...

don't be so pessimistic i'd like to see metal-grey instead of brown as cities grow to cover the whole planet. i'd like to see that grey thing to grow ten up to hundred kilometers into the see as well. or, mabe, the power plant with those red human-holding tanks and the massive all-covering dark clou...

Knowing what we know about our sun, I don't believe anything will happen soon... not within my lifetime, nor my sons, grandsons, great grandsons, great great grandsons, great great great grandsons, great great great great grandsons, great great great great great grandsons... or my great great great...

(9 - 8,3) / 8,3 is about 8% what is the difference between the aphelium and perihelium of Earth? what if you measure the travelling time on different dates? for example in january and june. I hover over the earth and set the velocity to the speed of light. It takes over nine minutes to get to the su...

everyone says that the moon being so big in real life is an illusion. pals! everything you see is an illusion!!! what is the difference between looking to a screen and looking to the sky? same photons entering your eye, same receptors sensing them, same neurons processing ... so if you see any diffe...

is that true? red giants seem to be brighter in the middle than at the perimeter? if so, they should look very interesting! i want to see a red giant!!!

one showing the speed of the observer moving through space (following the Shuttle etc), and the other showing the relative speed of another object (the Earth below), if one was selected. relative speed would be nice. however, there is no such thing as speed compared to space. there is no main coord...

From the Earth's surface, ISS or other satellites are visible only in a short period of time after sunset but before it enters the shadow of the planet (or of course the opposite is possible: after leaves the shadow but before sunrise). However, it seems that Celestia always renders ISS as a bright ...

grrrrrrr
that Guest thing makes me mad!
it was of course me

hm. i'm pretty sure that this question was asked some times, but I can't found any answers. seeing from the Moon's surface (sync orbit, near the surface), the Earth moves on a strange path on the sky. since Moon always shows the same side to Earth, I expected Earth to stay on one position on the sky...