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Rocket launch .. viewed from space


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    • By efaardvark
      Not quite The Expanse but good practice for converting all those other dwarf planets in the outer solar system into habitats. If the field of such bodies extends out into the Oort cloud as well then we have a LOT of habitat-building to do.
      https://arxiv.org/abs/2011.07487
       
       
    • By efaardvark
      “The TAGSAM head performed the sampling event in optimal conditions. Newly available analyses show that the collector head was flush with Bennu’s surface when it made contact and when the nitrogen gas bottle was fired to stir surface material. It also penetrated several centimeters into the asteroid’s surface material. All data so far suggest that the collector head is holding much more than 2 ounces of regolith.”
       
      So much in fact that the plastic flap that was supposed to close and seal the sample inside is stuck open, leaking the material that was collected inside the TAGSAM head.
      There was no hard deceleration on impact either.  The surface material at least is extremely loosely bound together.  Someone at work said it was like hitting a big, fluffy pillow full of gravel.   
      https://www.nasa.gov/press-release/nasa-s-osiris-rex-spacecraft-collects-significant-amount-of-asteroid
       
    • By efaardvark
      Currently... https://www.whereisroadster.com/
      Eventually: The random walk of cars and their collision probabilities with planets
       
      And here's an Ars Technica article on efforts to track and predict the location of Starman and his roadster.
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