Surely you have heard the story of the astronaut coming back to Earth, looking as young and fit as when he left, with everybody else on Earth hardly being able to walk because of the years added to their age as a result of the difference in how time passed on Earth as opposed to how time passed for the astronaut.
Many would argue that this is just an illusion, when in fact, although not literally true, there is a scientific explanation for this. Indeed, as you must have guessed by now, Einstein's Theory of Relativity is perfectly applicable, and it is Einstein's Theory of Relativity we need to resort to in order to not only explain such hypothetical cases as this one, but also understand the particularities of the world we live in.
Upon mentioning Einstein and his famous Theory of Relativity, the first thing that comes to one's mind is the notorious E=mc squared. However, there is more to the theory than this: in addition to the implications concerning mass and energy, it touches further areas, such as, among others: space, time, and gravity.
We invite you to join us on our journey through the main points of Einstein's Theory of Relativity. This booklet is, thus, intended to show beginners to a brief and explanatory introduction to Einstein's Theory of Relativity - what it means, how Einstein got to develop it, its ramifications, as well as its applications and implications to present science and our lives as we know them.