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The universe had a secret life before the Big Bang, new study hintsIf this hypothesis holds, the gravitational waves generated during ... fluctuations that occurred during the universe's last contraction phase, not long before the period of expansion that we ...
An eccentric contraction provides the control of a movement on the downward phase and it works to resist the force of gravity. Figure caption, Left: Concentric contraction - the biceps are ...
An eccentric contraction provides the control of a movement on the downward phase and it works to resist the force of gravity. Figure caption, Left: Concentric contraction - the biceps are ...
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