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Space Exploration
Greg Miller's user avatar
Greg Miller's user avatar
Greg Miller's user avatar
Greg Miller
  • Member for 4 years, 10 months
  • Last seen this week
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11
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Top posts
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8
Why does Artemis I need a launch window?
Nov 16, 2022
7
When NASA spacecraft arrive at Mars, is Mars always always above the horizon in the US?
Aug 25, 2022
6
At what point on the Earth's surface does the +X axes of the J2000 coordinate system intersect?
Sep 9, 2022
6
What are these "fountains" during the deluge for the Super Heavy launch?
Nov 19, 2023
6
Access to Chebyshev coefficients from JPL ephemerides
Nov 2, 2021
3
How to calculate earth's precession using JPL Horizons System?
Jul 3, 2022
3
What is that black thing in center of every star in this JWST image?
Jul 10, 2022
3
What is the velocity of the ISS relative to the Earth's surface?
Nov 24, 2022
3
Orion Navigation Camera Image Quality
Nov 28, 2022
3
How to interpret the Artemis I flight path from NASA's Artemis I Map
Nov 17, 2022
Top network posts
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60
In this image taken by Voyager 1, which is closer: the earth or the moon?
28
What could be an explanation for a satellite-like moving light in the night sky that dims over time
23
How do planetarium apps and software calculate positions?
18
What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond?
17
Counting from the 21st century forward, what place on Earth will be last to experience a total solar eclipse?