![]() ![]() ![]() According to Albert Einstein’s theory of special relativity, summarized by the famous equation E= mc 2, the speed of light ( c) is something like a cosmic speed limit that cannot be surpassed. So will it ever be possible for us to travel at light speed?īased on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. In 1947 humans first surpassed the (much slower) speed of sound, paving the way for the commercial Concorde jet and other supersonic aircraft. At that speed, you could circle Earth more than seven times in one second, and humans would finally be able to explore outside our solar system. The speed of light is an incredible 299,792,458 meters per second. The idea of travelling at the speed of light is an attractive one for sci-fi writers. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians. ![]() COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives. ![]()
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