I probably don't get the actual issue you are seeing here but for me this is completely normal. Absolute magnitude of a star is the apparent magnitude as seen at 32,6 light years from that star (10 parsec). In all your examples the stars are way closer to the observer so many of absolute magnitude -...

Fun fact: The "Popping in of HD textures" bug in Space Engine has happened a lot of times in many versions (for Intel users is very common). https://cdn.discordapp.com/attachments/499019456874414100/499057827214655499/scr00547.jpg While reading this , I just remembered that the first time...

This is so exciting! I have little background in the topic and a huge amount of questions (from the silly to the philosophical). Going to take notes of each one of your amazing explanations. Thanks for the effort of making this (and an entire cosmological simulator) just for us. I'm going to learn a...

LiveLife42, here you have another mod for the list

23516 "sdB" is a valid spectral class in SE. It is equivalent of "B VI". Ups, you are totally right. It wouldn't make sense if SE didn't have that sorry. And yes spectral classification is quite "an art" at some point. There are a lot of schemes when you go in detail a...

For the 120 White Dwarf binaries I ask for a community addon here. You can take the data from the attached file. The spectral classes are similar to those used in SE but there might be some differences. For example, a DAB2.4+M is a binary with a DAB White Dwarf (SE allows for the specific kind of DA...

23504 But this is solitary white dwarfs? WD in binary systems, which was not resolved by GAIA, still lurking there. Exactly! Yes, I should have noted that. If there is a high \Delta m in a binary (like the case of Sirius), the high contrast would still hide the White Dwarf. We have reached complete...

23397 I hope the catalog will be included in SE 0.990. Regarding this I talked previously with Vladimir and he think it is better to have this as an addon for the moment until we can integrate a significant amount of Gaia data in Space Engine. Why? Because in this way we avoid having unrealistic pr...

Gaia's White Dwarf catalog Size: 73.221 White Dwarfs It has been a while since I said I would start working on Gaia's DR2 implementation in Space Engine (and I haven't show anything until now). A lot of decissions are been made and we are still probing how well behaved is the astrometry and the...

That's very interesting An'shur . I'm very skeptical with FTL travel been possible at all but expansion rates are an interesting topic in relation to all the speculative field of the Fermi paradox. I'm also very skeptical of extraterrestrial intelligence at all. I like the fact you thought about...

I was going to say the same. Gnargenox, are you researching in the field?

tRetro-Visor, those are true masterpieces.

I even understood 10% of it, it was so well explained! Hahahahahaha :lol: I'm learning a lot right now while I make this so plase add me to the prehistoric group of people here. Ok so let me say that I have changed a lot of the previous post because I think I was falling into another missconception...

21371  I did try directly computing orbits with and without perturbation just to try to get some intuition for how the perturbation effect works.  For starters I assumed co-planar, circular orbits, and also that only Neptune perturbs Uranus and not vice versa (which probably matters very little). W...