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Nov
17
awarded  Enlightened
Nov
17
awarded  Nice Answer
Nov
17
comment Is broadcasting the location of Earth to potential extraterrestial civilization regulated?
If they were to watch the TV, they would soon find out (1) the coordinates and (2) that it's not worth to go there.
Nov
17
comment Is broadcasting the location of Earth to potential extraterrestial civilization regulated?
Hmm. don't think this is an astronomy question. Perhaps better at space?
Nov
17
comment Why Jupiter's Great Red Spot is Reddish?
@HDE226868 I accidentally copied (instead of edited) it. I then had to delete one of them.
Nov
16
comment Why Jupiter's Great Red Spot is Reddish?
@Deuterium I find it amazing that you ask this question just 3 days after this press release! What triggered the question?
Nov
16
answered Why Jupiter's Great Red Spot is Reddish?
Nov
10
answered Number density of stars on the Galactic plane
Nov
9
comment Number density of stars on the Galactic plane
The stellar halo is definitely not appropriately described by a vertically exponential, but by a (galactocentric) radial power-law. Also, for most disc populations, $\mathrm{sech}^2(z/h)$ gives a better description than the exponential, but these are details.
Oct
19
awarded  Revival
Oct
8
answered What happens if two galaxies collide very quickly?
Oct
8
revised What known comets are binary?
added 4 characters in body
Oct
6
comment Is there any way a meteor can hit at less than escape velocity?
@LDC3 clarified in answer, but this was already evident from the question. Did you vote this down??
Oct
6
revised Is there any way a meteor can hit at less than escape velocity?
added 290 characters in body
Oct
5
answered Is there any way a meteor can hit at less than escape velocity?
Oct
5
comment What causes jets from newly born stars?
be honest upfront: "I/we don't know"
Oct
5
comment What are the current observational limits on the existence of Dyson spheres/swarms/rings?
No serious astronomer does. Those who do, do only because they can market that well with the public and hence get some funding.
Oct
4
comment What causes jets from newly born stars?
It's not clear from your answer why the magnetic field would create jets.
Oct
4
comment What are the current observational limits on the existence of Dyson spheres/swarms/rings?
I think a Dyson sphere is impossible, because nothing can stabilise it against gravitational collapse into the star. A ring rotating at the right rate is better, but a completely different type of thing and can only capture a tiny fraction of the stars energy.
Oct
4
answered If the expansion of the universe is speeding up, how long until everything nears the speed of light, and what would happen?