Mass misconception: Why we can't outpace light speed - Big Think

An object's mass remains constant, while its inertia changes with speed, ultimately preventing travel at or beyond the speed of light.
Explanations for the cosmic speed limit often conflate mass with inertia.

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Why doesn't the universe allow anything with mass move at the speed of light? - Quora

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PDF) The Natural Science Underlying Big History [ The Scientific World Journal, v 2014, 41 pages, article ID 384912, 2014 DOI: 10.1155/2014/384912 ]

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The Universe Has A Speed Limit, And It Isn't The Speed Of Light

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A mind-blowing explanation of the speed of light - Big Think