What Really Happens At The Speed of Light?
<p>it is true for any material thing that one measures to be moving at less than <em>c</em> relative to one's self. For such a thing, like a spaceship, there is no physical process that can accelerate it to greater than <em>c</em>. The flip side to this is the weird science of tachyons, which are hypothesized particles moving at greater than <em>c</em> relative to your frame but which have never been observed.</p>
<p>Nonetheless, the same physics that prevents moving at greater than <em>c</em> relative to you prevents anything observed moving <em>greater</em> than <em>c </em>from decelerating to <em>c</em> or below. In the weird, topsy turvy tachyon world, tachyons <em>lose</em> energy by <em>increasing</em> their speed, so they tend to accelerate off to infinite speed, which maybe why none have stuck around for us to see. <em>That</em> whole business is truly weird, and Selena Ballerina is a bit weirded out today, so i'll deal with in another article.</p>
<p><a href="https://medium.com/intuition/what-really-happens-at-the-speed-of-light-89dadbdf0eea"><strong>Read More</strong></a></p>