Tag Archives: Space-Time

Astronomers Have Caught a Star Literally Dragging Space-Time Around With It

by Matthew Bailes & Vivek Venkatraman Krishnan, ScienceAlert

One of the predictions of Einstein’s general theory of relativity is that any spinning body drags the very fabric of space-time in its vicinity around with it. This is known as “frame-dragging”.

In everyday life, frame-dragging is both undetectable and inconsequential, as the effect is so ridiculously tiny. Detecting the frame-dragging caused by the entire Earth’s spin requires satellites such as the US$750 million Gravity Probe B, and the detection of angular changes in gyroscopes equivalent to just one degree every 100,000 years or so.

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