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Aug
17
awarded  Notable Question
Jul
13
revised How many planets are there in this solar system?
rolled back to a previous revision
Jan
18
awarded  Popular Question
Oct
8
awarded  Yearling
Sep
30
awarded  Explainer
Sep
28
reviewed Close How to calculate right ascension of Greenwich?
Sep
28
reviewed Close What is the size of the universe.is it infinite?
Sep
28
reviewed Close Milky way: How do we know its appearance?
Sep
28
awarded  Good Question
Jul
10
reviewed Close Any cheap (less than 100 euro) telescope for observing Jupiter?
Jul
10
awarded  Popular Question
Jun
27
revised How many planets are there in this solar system?
rolled back to a previous revision
Jun
26
awarded  Popular Question
Jun
18
revised What is a singularity? What is at the center of a black hole? Specifically regarding space-time
Fixed typos, styling and formatting.
Jun
18
reviewed Close One year on the sun
Jun
18
reviewed Close Why one cannot escape from a black hole
Jun
18
suggested approved edit on What is a singularity? What is at the center of a black hole? Specifically regarding space-time
Jun
18
suggested rejected edit on Finding a Kerr Black Holes
Mar
15
comment Max. speed that a space probe can communite with the Earth?
This question appears to be better suited for Space Exploration.
Mar
5
awarded  Commentator