Tom Ruen

@Tom_Ruen

For original content I share geometry, astronomy, running, whatever interesting things I find. It is tough to avoid politics, but I may delete those quickly.

Vrijeme pridruživanja: studeni 2017.

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  1. Prikvačeni tweet
    16. srp 2019.
    Odgovor korisniku/ci

    7/16/19 updated Worlds by surface gravity, adding a few more larger moons and asteroids, neglecting many TNOs with no mass est. Highest addition by gravity 31 Euphrosyne at 2.22% earth (with a moon, 2019!)

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  2. prije 24 sata

    Northern Cardinal seems good first guess.

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  3. 3. velj

    Dawn bird, distinctive, why don't I know what it is? whistle-up, whistle-up, down, down, down, down, quick cheeps x6-8.

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  4. 3. velj

    So there are 2 Kansas Cities, neighbors across a river, with 150k people in the state of Kansas, and 490k in the state of Missouri. As well, the Kansas River flows into the Missouri River. Also the of the larger Kansas City won a game. A good day to learn.

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  5. 3. velj

    Setting Orion (and dimmed Betelgeuse) along with first quarter moon on the right edge.

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  6. proslijedio/la je Tweet
    2. velj
    Odgovor korisnicima i sljedećem broju korisnika:

    I like them both. By the way, I made also a rainbow torus too. Made with :

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  7. 2. velj

    This probably is best sequence 2020/2/02 2:02:02.02 But this works sunday night in 24 hour time: 2020/2/02 20:20:20.2

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  8. 2. velj
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  9. proslijedio/la je Tweet
    2. velj
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  10. proslijedio/la je Tweet
    2. velj

    Happy palindrome day (2020-02-02).

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  11. 1. velj

    Being a Senator is hard. Self-respect is harder.

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  12. 31. sij

    Or as an animated GIF, shortened to be under 15Meg

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  13. 31. sij

    I found how to capture frames so made an animation.

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  14. 31. sij

    Captain Kirt free-climbing El Capitan in "Star Trek V: The Final Frontier", 1989, deserved credit for a most unlikely movie scene. This opening scene symbolizes that we've left the world of physical laws to the metaphysical realm of the human heart.

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  15. 31. sij
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  16. 30. sij

    Here's a view with the solar system motion right to left, showing angle of ecliptic plane (diagonal yellow line on left).

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  17. 30. sij

    Here's a view looking back down the helix of solar systems past. (1000 year trail)

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  18. 30. sij

    With keyboard input, a few keys: + - Speed up or slow down time 1,2,3,4,5,6,7,8,9 - center on sun...Neptune. 0=off Ctrl+Z - input field of view in degree U - cycle up vector, 3 states: free, equatorial, ecliptic L - toggle lat/long&ecliptic lines O - toggle trail orbits

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  19. 30. sij

    This is pretty good, basic 8 planet solar system with helical trailer orbits with motion relative to Local Standard of Rest (13.4km/s motion towards near Lyra) Parametric input: sun and planet size multipliers, trail time in years, time step in days.

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  20. 30. sij

    Do you want to see a year's worth of Lunar phases in 96 seconds? Here they are! With 4 penumbral lunar, 2 solar eclipses Jan 10: Penumbral Lunar Jun 5: Penumbral Lunar Jun 21: Annular Solar Jul 4: Penumbral Lunar Nov 29: Penumbral Lunar Dec 14: Total Solar

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  21. proslijedio/la je Tweet
    29. sij

    Sagittarius stream: Artist's impression of the four tails of Sagittarius Dwarf Galaxy (orange clump on left of img) orbiting . Bright yellow circle to the right of the galaxy's center is our Sun (not to scale). Sagittarius is on the other side of galaxy from us

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