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Space Exploration
Bob Jacobsen's user avatar
Bob Jacobsen's user avatar
Bob Jacobsen's user avatar
Bob Jacobsen
  • Member for 6 years, 5 months
  • Last seen this week
  • Berkeley, California, USA
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Top posts
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38
Function of the separated, individual solar cells on Telstar 1 and 2? Why were they "special"?
Sep 1, 2019
38
How does SPACEX capture such images?
Jan 19, 2020
27
What do these markings on SpaceX's ship Mr. Steven represent?
Jul 14, 2018
27
What is carrier lock and bit lock?
Jan 2, 2019
26
Why would NOAA restrict the ability of SpaceX to live stream the second stage?
Mar 30, 2018
24
Why no parachutes in the Orion AA2 abort test?
Jul 2, 2019
21
Have light gases like hydrogen or helium been explored for ion propulsion?
Apr 13, 2020
20
Can a reentry be done slowly?
Jul 4, 2018
19
How do engineers know new engines will work nominally once they reach space?
Mar 11, 2020
18
Why do satellites appear to move faster when overhead and slower closer to the horizon?
May 5, 2018
Top network posts
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167
Why does the same proportion of a radioactive substance decay per time period? (half life)
87
What happens when you put water under intense pressure?
58
Does friction always oppose motion?
56
If the first law of thermodynamics ensures conservation of energy, why does it allow systems to lose energy?
54
Should a soda bottle be stored horizontally or vertically?