Space stuff thread

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  1. Posts : 5,605
    Originally Win 7 Hm Prem x64 Ver 6.1.7600 Build 7601-SP1 | Upgraded to Windows 10 December 14, 2019
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       #401
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  2. Posts : 21,004
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       #402

    Yep Steve very sad but I guess all the old spcies are getting on eh? Buzz Aldrin in our news just recently having to be got out of Antarctica Buzz Aldrin Leaves New Zealand Hospital After South Pole Scare - NBC News
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  3. Posts : 5,605
    Originally Win 7 Hm Prem x64 Ver 6.1.7600 Build 7601-SP1 | Upgraded to Windows 10 December 14, 2019
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       #403

    Yes they are John, yea, I heard about Buzz being evacted out of wayyy down under. Altitude sickness can be serious for any age, especially for Buzz at 86.

    The weather for Amundsen-Scott (2835m) Station they're pretty high at 2835m (9301.181 feet) look at that 975pressure.
    That would make a pretty good coastal storm for us.
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  4. Posts : 5,605
    Originally Win 7 Hm Prem x64 Ver 6.1.7600 Build 7601-SP1 | Upgraded to Windows 10 December 14, 2019
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       #404

    December Solstice Wednesday, December 21, 2016

    Last edited by Anak; 20 Dec 2016 at 16:53. Reason: Post title was in error, Solstice was two days away, not one.
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  5. Posts : 21,004
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       #405

    Yep that is a good read mate and it reminds me that if you didn't know I did watch a documentary or a DVD a while ago that if the Earth did not have that tilt there would be no life forms here
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  6. mjf
    Posts : 5,969
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       #406

    ICIT2LOL said:
    I did watch a documentary or a DVD a while ago that if the Earth did not have that tilt there would be no life forms here
    I didn't realize that before!
    Axis Tilt is Critical for Life
    So all those planets outside of our solar system not only need to be the right distance from their sun but need an appropriate rotational tilt to support our form of life. I don't think we can determine rotational tilt of distant planets. Earth's tilt appears optimal for life.
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  7. Posts : 21,004
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       #407

    Yes mate it was explained in the documentary and I think it had something to do with the way the seasons are set and yes if the planet has a 90 degree "list" facing the sun it probably does mean it will not hold life.

    That is a nice link too and I saw just the other week another program telling us the moon is moving away from us I think it was around 3cm per year.
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  8. Posts : 5,605
    Originally Win 7 Hm Prem x64 Ver 6.1.7600 Build 7601-SP1 | Upgraded to Windows 10 December 14, 2019
    Thread Starter
       #408

    mjf said:
    I don't think we can determine rotational tilt of distant planets.
    The axial tilt of the Earth has been known for a surprisingly long time. The first reasonably accurate measurements were made in China and India. The first (that we know of) was made in 1100 B.C. (over 3000 years ago!) by Chou Li. The next set of measurements came from greek geographers about 750 years later...

    ....The paths of the planets was carefully observed by Tycho Brahe in the late 1500s. Following Brahe's death in 1601, Johannes Kepler used the data to develop a set of laws that govern the way the planets move around the Sun (he proposed them in 1609).
    These laws, (creatively) called Kepler's Laws, still hold today. Combining Brahe's observations and Kepler's laws of planetary motion, we can infer the axial tilt. Brahe's calculations are probably the first modern, western measurements of the tilt of Earth's axis...

    Source: Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate)
    Earth's axial tilt was the first to be determined, the other planets of the solar system took longer because it took longer to make the observations to determine the tilt.

    So it follows that it will take longer to make observations of "distant planets" to determine each of their characteristics. There have already been findings of axial tilt for some exoplanets, look under the Inc. (Deg.) column of the chart here: List of exoplanets - Wikipedia

    The Hubble Deep Field pictures were not taken with just one snap, but over a period of 10days for HDF and 56 for HUDF
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  9. mjf
    Posts : 5,969
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       #409

    It appears you can determine the tilt of exoplanets.
    Explainer: How to find an exoplanet (part 1)
    :)
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  10. Posts : 5,605
    Originally Win 7 Hm Prem x64 Ver 6.1.7600 Build 7601-SP1 | Upgraded to Windows 10 December 14, 2019
    Thread Starter
       #410

    Great find Mike, bookmarked!
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