Celestia Forums

Hi Selden, that actually solved it. Shame on me, a look at the manual would have helped... I never used these lowres textures, I didn't even know they were there. I wonder where Celestia saves this view mode in the configuration, since I had the lowres textures, in both the old 1.4.1 version and the...

Hi all, first of all, I'm sorry if somebody else had a similar problem before, I didn'd find anything with a quick search here. I occasionally use Celestia on my old laptop for presentation purposes. Until last month, everything worked fine for years, but since yesterday Celestia's standard textures...

The problem with (stellar) black holes is that we still know very little about them. (The massive black holes in the cores of galaxies are better understood in the meantime...) There's a very well-known mass limit for a white dwarf, when it's crossed the white dwarf will collapse to a neutron star, ...

Selden is right, all elements heavier than iron are created in supernova explosions. I will explain it in some more detail to you. You gain energy from nuclear fusion, because the binding energy per nucleon is bigger for the product of the reaction. (Take for example hydrogen and helium: The educts ...

it seems to me that we had a [I] Key in France for the 1999 total eclipse: the sky was very cloudy, but just for the critic moment (for me in the far north of Paris): no clouds and a fabulous view of the eclipse.Extraordinary!Jeam Green with envy: At the location in Germany where I've been somebody...

PlutonianEmpire wrote:So, the only way Deneb CAN have civilization is if it captured a sunlike star that was at least 2 billion years old, right?

Well, I do not want to calculate the probability for this...

Yeah, i'm wondering if that "slightly variable" thing could mean that Deneb may have a companion star? As far as I know (just looked it up in Burnham's) Deneb has a variable radial velocity with a period of 11.7 days, and the amplitude of the variations in magnitude is 0.05. But other F- and A-type...

Hello PlutonianEmpire, there's lots of information on Deneb. The classical reference book would be Burnham's celestial handbook (last updated in the seventies, some data might be out of date). Scientifiic data can be found at http://simbad.u-strasbg.fr/sim-fid.pl Deneb has the spectral type A2 Ia an...

PlutonianEmpire, Deneb is an A2Iae supergiant, which means that it is already evolved. Considering stellar evolution calculations one can evaluate that it was an early B-type star of about 15 solar masses before it became the supergiant. Early B-type stars have a typical life time of 10 Million year...

Hello Harald and Fridger, finally I got it! I read only Harald's post yesterday evening, but I found libXmu in the xorg-x11-devel by myself. After getting similar messages in the next two runs (resolved by installing additional QT libs and some KDE-devel stuff) it worked at last. This was real learn...

Hi Fridger and Harald, unfortunately I'm not an expert on programming and compiling. I do not understand the logfile for the most part. Can somebody "translate" to me what the logfile wants to tell me? I uploaded the file at http://www.hs.uni-hamburg.de/DE/Ins/Per/Liefke/config.log It would be quite...

Hi folks,

I've got the same problem on a SuSE 9.2 system. The zlib and zlib-devel packages are definitely installed, so the problem is somewhere else. Any answers by now?

Carolin