Object Approaching Event Horizon: Why Does it Slow Down?

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Thread starter Ascenxion
Start date Mar 9, 2009
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Ascenxion

Thread starter
Mar 9, 2009

According to an outside observer, an object slows down as it approaches the event horizon but never reaches it. Why does it slow down?

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robphy

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Mar 9, 2009

It appears to slow down because (due to the arrangement of light cones near the horizon) it takes successively longer for the information from the infalling object to reach the outside observer.

Object Approaching Event Horizon: Why Does it Slow Down?

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Object Approaching Event Horizon: Why Does it Slow Down?

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