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Let's move the solar system - Stellar Engine

Ever thought of if we made contact with other intelligent life form , how are we gonna meet them physically with all the humans on earth? Don't worry there is a solution , and it is "Stellar Engine". Now what is a stellar engine? Simply put it is a hypothetical megastructure which uses a star's energy to propel or move the star and as the star moves the other planets will also move due the gravity of the star. The concept of Stellar engine was first introduced by Badescu and Cathcart. There are three classes of stellar engines : 1.Class A - Shkadov thruster One of the simplest examples of a stellar engine is the Shkadov thruster, or a Class A stellar engine. Such an engine is a stellar propulsion system, consisting of an enormous mirror/light sail—actually a massive type of solar statite large enough to classify as a megastructure—which would balance gravitational attraction towards and radiation pressure away from the star. Since the radiation pressure of the star wo...
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What are Antiparticles? Is there something that we should worry about?

  Simply put , antiparticles are the opposite of the subatomic particles but with different charge and different magnetic properties . For example the antiparticle of electron is a particle with same mass but different charge , in this case positive charge and it is commonly referred to as Positron.. While the electron has a negative electric charge, the positron has a positive electric charge, and is produced naturally in certain types of radioactive decay . The opposite is also true , the antiparticle of the positron is the electron. Particle–antiparticle pairs can annihilate each other, producing photons ; since the charges of the particle and antiparticle are opposite, total charge is conserved. For example, the positrons produced in natural radioactive decay quickly annihilate themselves with electrons, producing pairs of gamma rays . It is not possible to create an antiparticle without either destroying another particle of the same charge (as is for instance the case when an...
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5 Science Facts That School Didn't Teach Us

https://bismuni.com/pi44ai5kt?key=b1e465821452bd5a40fd39aee6f4dc57  1.Oxygen Has A Colour As a gas, oxygen is odourless and colourless. In its liquid and solid forms, however, it looks pale blue. 2.Bananas are Radioactive This is strange but true , bananas contain potassium, and since potassium decays, that makes them slightly radioactive. But it’s nothing you need to worry about. You’d need to eat 10,000,000 bananas at once to die of radiation poisoning. 3.Water can exist in three states at once This is called the Triple Boil, and at that temperature, water exists as a gas, a liquid and a solid simultaneously. It requires very specific conditions to achieve, so please don't try this at home. 4.Helium can work against Gravity When helium is cooled to extreme temperatures, just a few degrees away from absolute zero (-460˚F or -273˚C), it  turns into a superfluid , meaning it can flow without friction. It can climb up and over the sides of a glass, and leak through molecule-thin...
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