(via TEDEd) On their 20th birthday, identical twin astronauts volunteer for an experiment. Terra will remain on Earth, while Stella will board a spaceship. Stella’s ship will travel to visit a star ...

The Twin Paradox is one of the most fascinating and perplexing concepts in Special Relativity. It involves two twins: one stays on Earth while the other travels through space at near light speed. Upon ...

Albert Einstein’s “twin paradox” is a famous counterintuitive implication of the special theory of relativity, but it also reveals deep links between physics and philosophy, as Robert P Crease ...

Einstein said that clocks that are moving through space at dramatically divergent speeds will measure time differently, and he used his famous “twin paradox” to illustrate the point. But there are ...

One of Albert Einstein's greatest insights was realizing that time is relative. It speeds up or slows down depending on how fast one thing is moving relative to something else. How much does it change ...

Vol. 95, No. 1/2, The Contributions of Logic to the Foundations of Physics (June/July 2010), pp. 161-182 (22 pages) The aim of this paper is to provide a logic-based conceptual analysis of the twin ...

More accurate clocks and sensors may result from a recently proposed experiment, linking an Einstein-devised paradox to quantum mechanics. A physicist said the international collaboration aimed to ...

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Last week's lesson was time dilation, and you hopefully understand the basics of how it works. Cliff notes: According to Einstein's theory of relativity, the faster you travel, the slower time passes.