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#crater — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #crater, aggregated by home.social.

  1. Mars Express captura ondas "metálicas" que giran sobre un antiguo cráter marciano. [ENG]

    Mars Express captura ondas "metálicas" que giran sobre un... #mars #express #captura #ondas #"metálicas" #que #giran #sobre #un #antiguo #cráter #marciano #astronomia

    tardigram.com/m/astronomia/t/4

  2. A Crew Was Searching For Shipwrecks In Lake Michigan—But They Found Something Completely Different
    --
    popularmechanics.com/science/e <-- shared media / technical article
    --
    “ • A survey of Lake Michigan located at least 40 large craters on the lakebed.
    • Initial studies highlighted the spots as unknown shapes, but additional research revealed the craters are filled with marine life.
    • Researchers expect to investigate further, seeing how these craters formed and if they’re really sinkholes…"
    #GIS #spatial #mapping #water #hydrology #groundwater #crater #sinkhole #bathymetry #topobathy #remotesensing #sonar #LakeMichigan #Michigan #research #GreatLakes #geomorphology #geomorphometry #ROV #ecology #ecosystems #cyanobacteria #WisconsinShipwreckCoastNationalMarineSanctuary #Sheboygan #Wisconsin #extremeecosystems #extremophiles #offgassing #hydrocarbons
    @NOAA

  3. Challenges of #SpaceNavigation : If #Earth were the size of a softball, the #ISS would be orbiting just above the seams, the #Moon would be a #marble about 2 meters away, and #Mars would be 1.2 to 2.4 kilometers away. The targets are small and moving. timeandnavigation.si.edu/navig

    Chris Potts compared the target requirements of #landing the #Spirit rover inside a specific #crater on Mars 🔴 to being able to shoot a #basketball 🏀 through a hoop 9000 miles away.
    Since there’s no #GPS in outer space, navigators process the radiometric tracking data received from the #DeepSpaceNetwork (#DSN) to determine the #spacecraft’s #position and velocity. They also use optical data, where the spacecraft takes a picture of the star background to help refine the spacecraft’s trajectory universetoday.com/37934/the-na