| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 2 years, 5 months |
| seen | Mar 26 at 20:19 | |
| stats | profile views | 30 |
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Dec 22 |
awarded | Yearling |
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May 4 |
awarded | Yearling |
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May 4 |
awarded | Teacher |
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May 4 |
awarded | Student |
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May 4 |
awarded | Scholar |
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Apr 6 |
accepted | How are interplanetary trajectories found? |
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Nov 4 |
answered | How bright will an asteroid be? |
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Oct 26 |
accepted | Why isn't sunset time in sync with solstice? |
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Oct 26 |
comment |
Why isn't sunset time in sync with solstice? @StuartRobbins, thanks. The USNO times match with a few other sites including the NOAA which claims accuracy to within 1 minute. Though I don't think it explains why the two events would calculate out to such different dates. Actually, I've found an explanation similar to Omega Centauri's on the Royal Observatory's site. I'll add a link to it in the question. |
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Oct 26 |
comment |
Why isn't sunset time in sync with solstice? Sorry but it's still not clear. The date of the solstice and the date of the sunset times are both on the same "clock" so to speak (using the same calendar). I understand the date of the solstice drifting from year to year but shouldn't the sunset time reversal happen at the same time as the solstice? |
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Oct 25 |
asked | Why isn't sunset time in sync with solstice? |
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Oct 5 |
comment |
Video of Earth spinning? It's 3680 km/hr (not km/s). |
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Aug 8 |
comment |
How are interplanetary trajectories found? Looks interesting, I'll take a look at it. Thank you. |
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Aug 8 |
comment |
How are interplanetary trajectories found? Thank you. Do you mean that since these "successive two-body problems" are not computationally excessive, that a brute force search is used to pick or find one particular trajectory? I'm sure there's more than one way to get to Mercury and I was curious what specific algorithm was used or could be used to optimize the search. |
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Aug 7 |
asked | How are interplanetary trajectories found? |
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Jun 16 |
accepted | Significance of letters in Hertzsprung-Russell (H-R) diagram |
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Jun 15 |
comment |
Significance of letters in Hertzsprung-Russell (H-R) diagram Good explanation. Now the letter assignments make sense. |
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Jun 15 |
asked | Significance of letters in Hertzsprung-Russell (H-R) diagram |
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Jun 4 |
answered | Are there websites or programmes that permit a simulation of the night sky in the past and the future on an ordinary computer? |
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Jun 3 |
accepted | Ways of verifying the origin of a meteorite? |