『Travelers In The Night』のカバーアート

Travelers In The Night

Travelers In The Night

著者： Albert D. Grauer
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 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 AliensAlbert D. Grauer 天文学 天文学・宇宙科学 科学
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  • 341E-364-Laser Surfing

    341E-364-Laser Surfing
    2025/06/17
    When we find a planet which appears to have the chemical signs of living organisms in its atmosphere, the desire to take a close up look at it will be hard to contain. In a Scientific American article, Lee Billings describes Yuri Milner's 100 million dollar project "Breakthrough Starshot" which has been created to leap frog our current rocket technology's extremely long travel times to nearby planets. The plan is to put ultra light space probes on paths which will enable them to collect data as they streak by nearby potentially habitable planets. Our current iPhone technology is being used to envision a tiny robotic space probe which features cameras, life detecting sensors, maneuvering rockets, computers, and communications gear and yet has a mass of about that of a dime. Photons from 100 gigawatt pulses from a ground based laser array are then envisioned to reflect off the tiny spacecrafts solar sail where they transfer momentum to the space craft accelerating it to 20% of the speed of light. Numbers of these tiny robotic investigators could be launched together into Earth orbit and perhaps one a day could be sent towards a nearby star accelerated by laser pulses each of which contains the energy required to send a space shuttle into orbit. In a few decades closeup views and data from nearby worlds would begin streaming back towards the residents of our planet. The cost of investigating our planetary life hosting neighbors is likely to be less than what the US is planning to spend upgrading its nuclear weapons.
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    2 分
  • 853-Tardigrade

    853-Tardigrade
    2025/06/13
    In the search for life on Mars, Europa, Titan, and elsewhere in the universe astro-biologists are scouring the Earth for creatures tough enough to flourish under really difficult conditions. So far the leading species are the Tardigrades commonly known as water bears or moss piglets.
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    2 分
  • 852-Landing On Mars

    852-Landing On Mars
    2025/06/06
    The good news is a Mars landing by human colonists and their equipment seems technically feasible given a large budget of cash and grit.
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    2 分

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