How do we define "Science"?

what science actually is?

In my perspective, everything around us that we observe is Science ! Everything , even us -humans - made up of organs, tissues which are further made up of cells and then they made up of atoms and they of other constituent particles.

Science is simply the systematic study of the structure and the behavior of the physical and natural world through our observations and experiments.

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What is a Dyson sphere? How much energy can we harvest through it?

A Dyson sphere is a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output. The concept is a thought experiment that attempts to explain how a spacefaring civilization would meet its energy requirements once those requirements exceed what can be generated from the home planet's resources alone. Because only a tiny fraction of a star's energy emissions reaches the surface of any orbiting planet , building structures encircling a star would enable a civilization to harvest far more energy. The concept was later popularized by Freeman Dyson in his 1960 paper "Search for Artificial Stellar Sources of Infrared Radiation ". Dyson speculated that such structures would be the logical consequence of the escalating energy needs of a technological civilization and would be a necessity for its long-term survival. He proposed that searching for such structures could lead to the detection of advanced, intelligent extrat...

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5 Mind blowing science fact that you didn't(might) know.

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