The gradient of a velocity-time graph at a particular time gives the acceleration of the object at that time. \(\text{Gradient} = \frac{{change\,in\,velocity ...
New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead ...
New research suggests that dark energy isn't needed to explain the acceleration in the expansion ... have mapped the universe's growth over time. Decades ago, researchers used this method to ...
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