Astronomy
HopDavid's user avatar
HopDavid's user avatar
HopDavid's user avatar
HopDavid
  • Member for 9 years, 9 months
  • Last seen more than 1 year ago
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1,392
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75k
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18
answers
4
questions
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About

I love art and math -- M.C. Escher is an influence. I enjoy science fiction. I'm interested in space exploration.

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Top tags
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39
Score
8
Posts
36
Posts %
25
Score
2
Posts
9
Posts %
18
Score
4
Posts
18
Posts %
15
Score
2
Posts
9
Posts %
13
Score
4
Posts
18
Posts %
13
Score
2
Posts
9
Posts %
Top posts
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All Questions Answers
Score Newest
answer
24
Can a natural satellite exist in a geostationary orbit?
Aug 24, 2014
answer
15
How often do stars pass within 1 light year of the Sun?
Jun 2, 2014
answer
11
Why did Venus not lose its atmosphere without a magnetic field?
Mar 19, 2015
question
10
Is there a ceiling for stable L4 or L5 masses?
Jun 1, 2014
question
8
Has New Horizon's data updated Charon's orbital elements?
Aug 6, 2015
answer
8
Why don't planets and asteroids have (cometary) tails?
Apr 11, 2014
answer
6
What is the optimal escape trajectory from near a black hole?
Jun 1, 2014
answer
6
Planets and moons positions in cartesian coordinates?
Jul 14, 2015
answer
4
During night on the Moon is there Earth light and Earth phases?
Jul 24, 2015
answer
4
Where can I find a set of data of the initial conditions of our solar system?
May 13, 2014
Top network posts
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53
How fast will 1g get you there?
41
Why don't we launch spacecraft from the Moon?
25
What's the path of something dropped from a space elevator
23
What's the path of something dropped from a space elevator
23
Why did SpaceX attempt to land the booster on a barge instead of somewhere on land?

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