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Jan
10
comment Why are planets spherical?
Also related: astronomy.stackexchange.com/questions/1102/…
Dec
12
answered Brightest Radio Source In the Universe
Dec
10
answered What are the current accepted theories of the formation of the Uranian moon Miranda?
Dec
10
comment What are the current accepted theories of the formation of the Uranian moon Miranda?
I'd rather say it's too small to be called a "world". Giant rock will be a better term, and those are seldom of regular shape.
Dec
10
comment Is the rotation of the Sun and the rotation/orbit of the Moon around the Earth a coincidence?
scienceforums.net/topic/…
Dec
5
comment What is the maximum transmission distance of the radio signal in the outer space which could still be understood?
physics.stackexchange.com/a/87997/30000 - check out this related question. As radio transmitters are just another variety of light sources when astronomy is concerned, we will need transmitters comparable in power to stars to make them visible on the inter-star distances (we can gain some signal power through focusing, but even best focusing will still require 1 millionth of "hot Jupiter" power output, which is rather huge).
Dec
3
answered Could Venus be a source of Earth's water?
Nov
19
answered How do scientists determine the age of stars?
Nov
12
awarded  Teacher
Nov
12
answered Colossus telescope, trying to outsmart aliens?