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Nov
30
revised Is lunar elevation at a given location for a given day unimodal?
added 2 characters in body
Nov
27
revised Calculation of right ascension and declination
edited title
Nov
8
awarded  Nice Question
Oct
31
revised Why is there billowing dust in nebulae?
deleted 107 characters in body; edited tags; edited title
Oct
29
revised Do all the objects in the universe exert force on all other objects?
Mathjaxified
Oct
29
revised Why can't light escape from a black hole?
grammars
Oct
29
revised Milky Way Galaxy from Earth
deleted 12 characters in body
Oct
28
awarded  Nice Answer
Oct
23
awarded  Beta
Oct
23
awarded  Enthusiast
Oct
19
revised How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
deleted 5 characters in body
Oct
19
revised Why is the Earth's center still hot after millions of years?
Grammar
Oct
17
comment Age of the universe
We don't know. Some certainly think so. Very different things.
Oct
16
awarded  Nice Question
Oct
16
awarded  Nice Answer
Oct
13
revised From which country or area is the new moon visible first?
added 17 characters in body; edited title
Oct
13
revised Have we ever observed a large meteor hit the Moon?
edited title
Oct
10
asked What is the standard reference point for measuring speed?
Oct
10
comment How can I create tracks of the planet's orbits on my computer?
Are you looking to create new data (make your own observations, etc) or browse historical/current data from other people?
Oct
9
awarded  Custodian