Travelers In The Night

By: Albert D. Grauer
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  • Summary

  • A real "Science Snack" for anyone who is interested in the extraterrestrial.
    Dr. Al Grauer is a member of the Catalina Sky Survey which has led the world in near Earth asteroid discoveries for 17 of the past 19 years.
    The music is "Eternity" by John Lyell.
    Astronomy Asteroids Space NASA Comets Earth Impact Aliens
    Albert D. Grauer
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Episodes
  • 304E-323-Big Splash

    304E-323-Big Splash
    Oct 1 2024
    To discover what would happen if an asteroid were to strike a large body of water, Dr. Galen Gisler led a team of scientists who used high performance computing facilities at Los Alamos National Laboratory to calculate and visualize a 3-D model of an asteroid entering the Earth's atmosphere over one of the world's oceans. These efforts won them the Best Visualization and Data Analytics Showcase award at Supercomputing 2016. Reality is that what happens depends upon the mass, size, speed, angle of approach, and composition of the impacting object. Galen's group of scientists documented the hunch that since an asteroid strikes the water at a single point, it only effects the immediate region around the impact point, whereas to create a tsunami, you need something like an under water landslide which disturbs an entire water column from the ocean floor to the surface.
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    2 mins
  • 816-David's Close Approaching Comet

    816-David's Close Approaching Comet
    Sep 27 2024
    My Catalina Sky Survey Teammate David Rankin was asteroid hunting in the constellation of Pegasus with our 60 inch telescope on Mt. Lemmon, AZ when he spotted a faint fuzzy object moving through a set of his images.David’s discovery is classified to be one of the more than 30 Encke type comets. This family small solar system objects have orbital periods about the Sun similar to their namesake comet 2P/Encke’s orbital period of 3.3 years
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    2 mins
  • 303E-322-Dust Stories

    303E-322-Dust Stories
    Sep 24 2024
    Collect your own beautiful micro-meteorite sample.
    It is estimated that several hundred thousand pounds of left over particles from the formation of our solar system enters the Earth's atmosphere every day with perhaps 10% of the of the total reaching the surface of our home planet. The individual grains of cosmic dust or micro-meteorites as they are also called range in size from the diameter of a human hair to twice the thickness of a dime.
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    2 mins
Astronomy
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