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Offline parentsfortruth

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Space debris
« on: September 17, 2011, 11:57:43 AM »
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  • http://www.nasa.gov/mission_pages/uars/index.html

    NASA's Upper Atmosphere Research Satellite, or UARS, is expected to re-enter Earth's atmosphere in late September or early October 2011, almost six years after the end of a productive scientific life. Although the spacecraft will break into pieces during re-entry, not all of it will burn up in the atmosphere.

    The risk to public safety or property is extremely small, and safety is NASA's top priority. Since the beginning of the Space Age in the late-1950s, there have been no confirmed reports of an injury resulting from re-entering space objects. Nor is there a record of significant property damage resulting from a satellite re-entry.

    It is too early to say exactly when UARS will re-enter and what geographic area may be affected, but NASA is watching the satellite closely and will keep you informed. Visit this page for updates on the satellite's orbital track and predicted re-entry date.

    › Re-Entry and Risk Assessment (498 KB PDF)
    › Frequently Asked Questions: Orbital Debris

    NASA will post updates weekly until four days before the anticipated re-entry, then daily until about 24 hours before re-entry, and then at about 12 hours, six hours and two hours before re-entry. The updates will come from the Joint Space Operations Center of U.S. Strategic Command at Vandenberg Air Force Base, Calif., which works around the clock detecting, identifying and tracking all man-made objects in Earth orbit, including space junk.

    The actual date of re-entry is difficult to predict because it depends on solar flux and the spacecraft's orientation as its orbit decays. As re-entry draws closer, predictions on the date will become more reliable.

    As of Sept. 8, 2011, the orbit of UARS was 152 miles by 171 miles (245 km by 275 km) with an inclination of 57 degrees. Because the satellite's orbit is inclined 57 degrees to the equator, any surviving components of UARS will land within a zone between 57 degrees north latitude and 57 degrees south latitude. It is impossible to pinpoint just where in that zone the debris will land, but NASA estimates the debris footprint will be about 500 miles long.

    If you find something you think may be a piece of UARS, do not touch it. Contact a local law enforcement official for assistance.

    Update #3
    Fri, 16 Sep 2011 02:12:40 PM CDT

    As of Sept. 16, 2011, the orbit of UARS was 140 mi by 155 mi (225 km by 250 km). Re-entry is expected Sept. 23, plus or minus a day. The re-entry of UARS is advancing because of a sharp increase in solar activity since the beginning of this week.
    Matthew 5:37

    But let your speech be yea, yea: no, no: and that which is over and above these, is of evil.

    My Avatar is Fr. Hector Bolduc. He was a faithful parish priest in De Pere, WI,

    Offline herbert

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    Space debris
    « Reply #1 on: September 18, 2011, 01:55:15 AM »
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  • pft, my teacher told me that someone drop a penny off the top of the empire state building one time and it fell on soembody head and decapitated them. imagine what the space junk could do, considering it falling from higher place. it would turn a person into oatmeal probably, or grits.


    Offline parentsfortruth

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    Space debris
    « Reply #2 on: September 18, 2011, 09:42:58 AM »
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  • Quote from: herbert
    pft, my teacher told me that someone drop a penny off the top of the empire state building one time and it fell on soembody head and decapitated them. imagine what the space junk could do, considering it falling from higher place. it would turn a person into oatmeal probably, or grits.


     :scared2:

    Hopefully it falls into the ocean but you never know... and at 6 miles/second... you won't even know what hit you.
    Matthew 5:37

    But let your speech be yea, yea: no, no: and that which is over and above these, is of evil.

    My Avatar is Fr. Hector Bolduc. He was a faithful parish priest in De Pere, WI,

    Offline TKGS

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    Space debris
    « Reply #3 on: September 18, 2011, 07:07:23 PM »
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  • Oh oh.  It looks like some of the space junk DID hit the earth:


    Offline Vandaler

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    Space debris
    « Reply #4 on: September 19, 2011, 08:57:43 AM »
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  • Quote from: herbert
    pft, my teacher told me that someone drop a penny off the top of the empire state building one time and it fell on soembody head and decapitated them.


    Herbert,

    This is an urban myth which is simply not true.  A penny does not weigh much and quickly arrives at it's "terminal velocity":  the speed at which the wind resistance is equals the force of gravity thus preventing any more acceleration.

    Furthermore, satellites do not fall hard and fast because they fall from high, but rather because they are already flying very fast to stay in orbit around the earth.  

    http://science.howstuffworks.com/science-vs-myth/everyday-myths/threw-penny-off-the-empire-state-building.htm


    Offline Cristera

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    Space debris
    « Reply #5 on: September 19, 2011, 05:27:17 PM »
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  • Quote
    – Number of potentially hazardous objects expected to survive: 26
    – Total mass of objects expected to survive: 532 kg
    – Estimated human casualty risk (updated to 2011): ~ 1 in 3200


    1 in 3200!!!!!

    This is the list of satellite debris that will survive reentry:



    source


    Offline herbert

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    Space debris
    « Reply #6 on: September 21, 2011, 06:53:52 AM »
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  • Quote from: Vandaler
    Quote from: herbert
    pft, my teacher told me that someone drop a penny off the top of the empire state building one time and it fell on soembody head and decapitated them.


    Herbert,

    This is an urban myth which is simply not true.  A penny does not weigh much and quickly arrives at it's "terminal velocity":  the speed at which the wind resistance is equals the force of gravity thus preventing any more acceleration.

    Furthermore, satellites do not fall hard and fast because they fall from high, but rather because they are already flying very fast to stay in orbit around the earth.  

    http://science.howstuffworks.com/science-vs-myth/everyday-myths/threw-penny-off-the-empire-state-building.htm


    she must be a liar then she said the penny decaitated this guy right in front of her and his head went rolling down the street.

    Offline Vandaler

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    Space debris
    « Reply #7 on: September 21, 2011, 08:33:39 AM »
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  • Why not confront her with evidence, it's an education opportunity.


    Offline herbert

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    Space debris
    « Reply #8 on: September 21, 2011, 07:27:59 PM »
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  • Quote from: TKGS
    Oh oh.  It looks like some of the space junk DID hit the earth:




     

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