I feel very stupid right now. Should be an easy question, but I googled it to no avail.
Basically, I have an class.object in my code which should be managed by a class.function
For example, I want the following code:
class Z:
a=0
def mod(self):
self.a=self.a+1...
A Hitchhiker's Guide to the Galaxy in three copies, purely from fear of being moved in time but not in space. Oh, and I'll try to get a spacesuit along too, if possible. And a towel, of course, yes.
edit: oh, the irony, I have 42 posts at the moment
Consider something continiously "resupplying" H2 onto a star, causing a delay in shifting it off the main sequence (the star wandering off the main sequence is like flying on a jetpack into volcano — while you'll still live for some time, it's sort of short compared to your age). This effect of...
I've once heard a senior astronomer claim that anything beyond 20 meters is technologically not feasable. But I hope they'll overcome all the difficulties, because this is just too exciting!
While it is possible to gain weight for a star, this change is usually insignificant. One common exception happens in binary systems. Two stars evolve, one of them starts to enter a giant phase, and eventioally, as it's radius overflows the Roche lobe of a pair, it starts accreting mass on it's...
Thanks for all the answers. It was sort of easy for me to imaging macroscopic black holes partially absorbing km radio waves, but when I tried to think about microscopic black holes in particle accelerators and shorter wavelengths, my imagination just didn't want to have part in it at all.
So...
Hey, before people start throwing rotten vegetables at me, I'm not any good in general relativity!
So my question is: are black holes transparent to electromagnetic waves of wavelengths on the same order as the Schwarzschild radius of the BH?
You're right indeed, I missed that!
But then still, forget about the p-p chain for a second and think about the CNO cycle. They do require metals (in astrophysical sense) to fuse elements through the CNO cycle, therefore in the event of only-atomic-gas-cloud we'll have a large difference in how...
Wait wait wait. So far the replies are given in terms of initial stages of star formation only. But the thing is, if there's only H2 in the cloud and no helium, the fusion mechanism will be totally different! In our sun, the dominant energy production mechanism is p-p chain, and it requires...
Hey Elecomputer!
I'm not sure if it's a good solution, but seeing how your thread slowly sinks to the second page tells me that I should post it anyway.
You may try using the database from Stellarium! It has a lot of solar system objects, including planets (of course), their satellites...
Hey PF,
I'm just being stupid today, because I can't figure out the way HR diagram is constructed, hope you guys can help. So suppose that you complete an observation in several different filters, and you need to work out the luminosity and temperature for each object in your field of view...
Jow, Game of Thrones is indeed, as others said, targeted at people who like sex/drama/violence bundle. I am a great fan of the books, and I suggest you to read them, since they are so much more detailed and deep than the series that I just have to stop typing now and focus on TV adaptation. I...