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    fact & fiction
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fact & fiction বাংলা
fact & fiction
天文学
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  • এলিয়েনদের পাঠানো বার্তা ♦ Arecibo Message ♦ কী উত্তর দিয়েছে এলিয়েন ♦ fact & fiction বাংলা ♦ PJPAF

    এলিয়েনদের পাঠানো বার্তা ♦ Arecibo Message ♦ কী উত্তর দিয়েছে এলিয়েন ♦ fact & fiction বাংলা ♦ PJPAF
    2022/11/19
    hey my friend Riaz is here. And you are watching your own channel 'Fact & Fiction Bangla'. So how excited are you about making new ones? How do you approach someone you don't even know as a friend? As a civilization we humans are always excited to make friends with other extraterrestrial civilizations. For example, you must have heard about Voyager-1's golden record. Another such attempt was the Arecibo message of 1974. It is a special radio message, much like a secret code. Which only an intelligent creature can decode and understand what it says. This radio signal was sent to a galaxy 25 thousand light years away. But what did we say about our friends in the distant sky, our own? Let's find out.
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    8 分
  • DART Mission ♦ NASA ♦ Apophis ♦ Chicxulub ♦ Asteroid ♦ fact & fiction বাংলা ♦ PJPAF

    DART Mission ♦ NASA ♦ Apophis ♦ Chicxulub ♦ Asteroid ♦ fact & fiction বাংলা ♦ PJPAF
    2022/11/12
    Hey, my friend. Riaz here. And you are watching your own channel 'Fact & Fiction Bangla'. You must know that about 65 million years ago an asteroid named 'chicxulub'. It hit the Earth, wiping out the entire dinosaur species. Our ancestors (mammals) survived then because they lived underground. But now the scenario has completely changed, we now live on the surface of the earth. Now if such an asteroid hits the earth then you must understand what will happen. Scientists believe that on 23 April 2029, an asteroid, named 'Apophis', will pass by the Earth. And the chances are that it could hit some part of the Earth. So what can we do here? If the question was asked before 23 September 2022, I would say we have nothing to do but wait and see. Since September 23rd, we have had the technology to alter the trajectory of an incoming asteroid. NASA successfully completed their 'DART' mission on 23 September. So they were able to change the trajectory of an asteroid as per their plan . This technology will save the world from many dangers in the future. However, as you can understand, it was not easy to do. Because nothing like this has ever been done before in human history. Behind this is a lot of careful calculations and the work of hundreds of scientists. Let's see how the trajectory of an asteroid is changed.
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    7 分
  • Technologies of Apollo 11 We Use in Our Life ♦ চন্দ্রজয়ের প্রযুক্তি ♦ NASA ♦ fact & fiction বাংলা

    Technologies of Apollo 11 We Use in Our Life ♦ চন্দ্রজয়ের প্রযুক্তি ♦ NASA ♦ fact & fiction বাংলা
    2022/11/08
    Man's feet landed on the moon, courtesyof NASA's Apollo missions. But about53 years later, how important isit in our lives today? I bet the impact ofthe Apollo missions on our livesis hundreds of times bigger than youthink. Many new revolutionaryscientific technological advances weremade to make the Apollo missions a success.There are so many technologies thatwe can't imagine our daily lifewithout. They were invented only forthe Apollo missions. By the end of thevideo, you will understand theimpact of the Apollo mission on ourlives today.
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    6 分

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