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Feb
27
awarded  Nice Answer
Feb
16
comment How many sun-like stars are there in the universe?
@WilliamHirtz Saying 100 billion of each is a useful order-of-magnitude guesstimate, that in reality fudges the numbers a bit in order to compensate for those complexities which may confuse the layman. There are likely many more than 100 billion galaxies (and the Milky Way may have 200 to 400 billion stars). The mass of the observable universe is about 1.7 x 10^24 solar masses. Is it really that unbelievable that there exist 10^22 stars?
Feb
15
awarded  Enlightened
Feb
15
awarded  Nice Answer
Oct
18
awarded  Yearling
Oct
18
awarded  Yearling
Sep
24
awarded  Autobiographer
May
22
reviewed Approve Active Galactic Nuclei - categorisation on the basis of observer?
May
7
reviewed Reject Did big bang happen only one time or it might happen again somewhere million time away from our observable universe?
Feb
10
comment Integral calculus for the Olympiad?
@altair It's not that no one wants to help - like every other side on SE, we need to keep this place on topic. You must ask an astronomy question.
Feb
9
comment Integral calculus for the Olympiad?
Sorry, but I think this question is far too broad (and not easily relatable to astronomy). Come up with a specific mathematical (and astronomical) problem and we should be able to help you understand.
Feb
9
answered Do stars have exactly sphere shape?
Feb
5
comment How can we tell that the Milky Way is a spiral galaxy?
@Deveet Patel Would you comment on why you've put a bounty on this question? With MBR's solution, I'm not sure what there is left to answer.
Jan
27
answered Nuetrino interaction with plasma and electromagnetism
Jan
14
awarded  Citizen Patrol
Jan
10
reviewed Approve Does gravity slow or speed light up?
Jan
9
comment How to plot orbit of binary star and calculate its orbital elements?
Or, see for example: sourceforge.net/projects/phoebe
Jan
8
revised Is the discovery of Alien or Extra Terrestrial Life a function of the science of Astronomy?
edited body
Jan
8
comment Martian Brother
@Cyberherbalist there is not yet any concrete evidence to support these suggestions, so as called2voyage says, it is not an appropriate topic for this site.
Jan
8
answered Is the discovery of Alien or Extra Terrestrial Life a function of the science of Astronomy?