Incredible Video Shows How We Could Accelerate The Sun Out Of The Path Of A Supernova - Physics-Astronomy.org

Incredible Video Shows How We Could Accelerate The Sun Out Of The Path Of A Supernova

Archimedes stated (correctly) that if he was given a place to stand, he could move the world. But the people at YouTube channel Kurzgesagt – In a Nutshell have greater ambitions; they plan to move the whole Solar System.




In their latest video, they ask a simple yet fascinating question. If the Solar System was moving towards a dangerous part of the galaxy, such as into the path of a future supernova, could it be possible to shift the path that the Sun, planets, and thousands of other bodies take around the Milky Way?
The answer is yes, as long as civilization is advanced enough. To move a star system, one needs a stellar engine to move the star. The planets and the rest will follow along thanks to gravity.


The video focuses on two main types of stellar engine. The first one is called the Shkadov Thruster after the person who came up with it, physicist Leonid Shkadov. The design and the physics behind it are remarkably simple. Photons, the particles of light, have momentum, so they can push stuff about (although it's just a tiny push).
This approach is what propelled the Planetary Society's successful LightSail 2 this year and it would be possible to use it to move the whole Solar System. You'd simply need a huge parabolic mirror made of a light and durable material. This would reflect some of the light from the Sun, and in doing so, create a net propulsion using just photons. You wouldn't get much propulsion though. Over the time it takes the Sun to complete an orbit of the Milky Way (230 million years) you would have shifted the Solar System by just 100 light-years.
A quicker and more versatile approach is an active stellar engine. The Kurzgesagt team doesn’t do things half-heartedly, so they got an actual physicist to design one for them. Professor Matthew Caplan from Illinois State University has published a paper on the topic in the journal Acta Astronautica.


The Caplan Thruster works by taking helium and hydrogen from the Sun using powerful magnetic fields. The helium is fused and the oxygen is expelled, and the hydrogen plasma is accelerated towards the Sun, passing the momentum of the thruster to our star.
This engine requires additional mass to be lifted from the Sun and for this reason, it requires a megastructure such as a Dyson sphere to heat up the region of the Sun just in front of the engine.
The Caplan Thruster can create an acceleration of about 1 nanometer per second squared, which is roughly 10 billion times weaker than Earth’s gravity. But like the tortoise and the hare, constancy is rewarded. That acceleration would produce a deflection of over 30 light-years in just a million years. Enough to avoid a supernova.

16 comments:

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  6. i want to let the world know about Dr, Ojoka the Great spell caster that brought back my husband to me when i thought all hope was lost. Dr, Ojoka used his powerful spell to put a smile on my face by bringing back my man with his spell, at first i thought i was dreaming when my husband came back to me on his knees begging me to forgive him and accept him back and ever since then he loves me more than i ever expected so i made a vow to my self that i will let the World know about Dr, Ojoka because he is a God on earth. Do you have problems in your relationship ? have your partner broke up with you and you still love and want him back ? Do you have problem with your finance ? or do you need help of any kind then contact Dr, Ojoka today for i give you 100% guarantee that he will help you just as he helped me. Dr, Ojoka email is: dr.ojokaspelltemple@gmail.com OR add him on whats app via: +2348144172934
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  9. Testimony By Lizzy Desler. How to get your ex back fast!

    I was hurt and heart broken when a very big problem occurred in my marriage seven months ago, between me and my husband . so terrible that he took the case to court for a divorce. he said that he never wanted to stay with me again,and that he didn't love me anymore. So he packed out of the house and made me and my children passed through severe pain. I tried all my possible means to get him back,after much begging,but all to no avail.and he confirmed it that he has made his decision,and he never wanted to see me again. So on one evening,as i was coming back from work,i met an old friend of mine who asked of my husband .So i explained every thing to him,so he told me that the only way i can get my husband back,is to visit a spell caster,because it has really worked for him too. So i never believed in spell,but i had no other choice,than to follow his advice. Then he gave me the Email address of the spell caster whom he visited. Pristbacasim2000@gmail.com. So the next morning,i sent a mail to the address he gave to me,and the spell caster assured me that i will get my husband back the next day. What an amazing statement!! I never believed,so he spoke with me, and told me everything that i need to do. Then the next morning, So surprisingly, my husband who didn't call me for the past 7 months, gave me a call to inform me that he was coming back. So Amazing!! So that was how he came back that same day,with lots of love and joy,and he apologized for his mistake,and for the pain he caused me and my children. Then from that day,our relationship was now stronger than how it were before,by the help of a spell caster. So, i will advice you out there if you have any problem contact Pristbacasim, i give you 100% guarantee that he will help you.. Email him at: Pristbacasim2000@gmail.com Or Call +19785337250 / whatssapp



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