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|    Message 11,569 of 11,639    |
|    MrPostingRobot@kymhorsell.com to All    |
|    unusual light variations seen by space t    |
|    05 Sep 22 08:17:35    |
      EXECUTIVE SUMMARY:       - The data from (so far) 3000 stars being monitored for planetary       transits by the TESS space telescope have been stitched together to       form a movie of the whole sky.       - The sky is divided into 10x10 grid squares and several TESS stars       assigned to each square. The central flux is normalised to av=0 and       sd=0 and averaged for each square. The squares are assigned a color       value depending on "average anomaly" for each 2.4 hr period between       2018 and 2022 and the resulting 13k frames plotted, along with letters       for the positions of key planets.       - The resulting plot shows unusual large-area coordinated variations       in light intensity from the stars under observation. In particular       large regions with linear or line-like shapes appear from time to       time. It's calculated even 5 dark squares from the characteristics of       the data should only show up around 20 times in 1 mn frames. But       they show up dozens of times here in ~13k frames.       - Other patterns include regions of coordinated brightening of dozens       of stars under observation by TESS. Since the stars are very distance       from each other we are forced to conclude such brightening may       represent bright objects that have briefly (or longer) passed between       the remove stars and the TESS telescope.       - Further rough calculations show some of the phenomena seen may       represent objects between the earth and moon travelling laterally       around 100 km/sec. Objects much further away than the moon might be       travelling slower. Objects closer to earth -- e.g. the 1000 km       observed by a group of Ukrainian astronomers in Kiev -- would indicate       a much higher speed 10x higher i.e. 1000 km/sec, a value comparable to       one they calculated for an object seen moving against the background       sky around 1000 km above the earth.                     In an earlier post we looked at how light curves for 1000s of stars       targeted for planetary transit by the TESS space telescope also tend       to show variations that also appear in UFO activity as reported to the NUFORC.              As many stars brighten and dim according to the TESS data that has       been orbiting between earth and moon between from 2018 there is a       strong statistical correlation between the measured flux and certain       types of activity, particularly objects spotted over N Am and       described as "pale" or "pink".              We might interpret this as something blocking or enhancing the normal       flux from these stars, perhaps by an object that is moving between the       distant star and the TESS telescope. Some objects may be dark while       others seem to be brighter than the background of space.              These observations are similar to a report from a group of       astronomers at the Ukrainian Central Observatory that used a linked       pair of meteor cameras to image and measure objects seen at altitudes       up to 1000 km and moving at speeds from 5 to 300 km/sec. They report       some of "many" objects were dark and others brighter than the       background of space or even the moon. Their observations were carried       out during daylight over central Ukraine.              As a next step we have created some movies that plot the anomalous       brightness of each section of sky seen by TESS over the period       2018-2022. The sky is divided up into 10x10 deg grid squares and TESS       observations for several stars assigned to each grid. The flux of each       star is normalised to avg==0 and sd==1 before each square is averaged       over the time interval. Then each square is graphed on a density plot       and the sequence of frames at 2.4 hr granularity. The positions of the       moon, sun, key outer planets and an approx location of the Earth as       seen from TESS (other objects are located according to JPL's Horizons       s/w as seen from Mauna Kea) to see whether any "patterns" seem to       visually relate to a given planet or other bright object that may be       in the same section of sky as an "anomaly".              The first plot uses the TESS "central aperture" flux values for each       of the stars in its planetary transit "hit list". The central pixel       shows only the star in question. A second plot has been prepared of       the "background" around each star in the list.              Both plots show highly unusual patterns seemingly similar to those       seen by the Ukrainian astronomers.              We see long periods (of several days :) where "nothing is happening".       But then there are short periods where whole sections of sky seem to       go dark or bright in patterns that seem similar to lines.       Calculations show 5 adjacent squares (of 10x10 deg) should only become       anomalously bright or anomalously dark 20 times in 1 mn frames.       With moves around 13000 frames (i.e. 2.4-hour periods between       2018-2020) dozens of frames show line-like patterns dozens of times.       Dark areas seem to extent over many adjacent squares -- sometimes 100s       of adjacent squares -- mostly all going anomalously dark around the       same time in a period of sometimes hours and sometimes days.       Remember, each gird square contains several stars so the patterns       indicate "for some reason" 100s of stars have on average gone       anomalously dark (or bright) around the same time and then flipped       back to average flux also around the same time.              We might strongly suspect some object or possibly large groups of       objects possibly between the earth and the moon have passed between       TESS and the remote stars under observation.              Further calculations are underway to estimate the distance/size       relationship they may be responsible for the patterns of dimming and       brightening. The dimming patterns might be assumed to be a dark or       near-black object or objects coming between a series of remote stars       and the telescope. The angular size of e.g. the sun at 10 LY is       around .002 arc seconds. From the% of flux that is "blocked"       we can calculate the angular size of an hypothetical object and then       plot its size vs suspected distance -- possible using the "average" distance       between objects in the earth-moon region (e.g. ~200k km) as a yardstick.              From the extent of dark regions seen periodically on the plots we can       also make estimates of at least the bounds of object lateral speed.       Roughly, if we see a dark region 100 deg wide over a period of 1 hour       we might roughly estimate a group of objects maybe 200,000 km away are       moving laterally around 100 km/sec -- slower if further away and       possibly much faster if closer.              The initial release of a detailed density plot based on the anomalous       changes seen in the central flux of groups of stars in 10x10 deg grids       across the sky, along with letters noting the positions of the sun (S)       and key planets are at |
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