Astronomers Observe a Star Dragging Space-Time Around With It

Astronomers Observe a Star Dragging Space-Time Around With It
The Siliconreview
31 January, 2020

Einstein’s ‘General Theory of Relativity’ predicts that any spinning body drags the very fabric of space-time in its vicinity around with it, known as ‘frame-dragging’. However, frame-dragging is very undetectable and inconsequential in daily life because the effect is so tiny. Detecting the frame-dragging phenomenon caused by the earth’s spin requires the use of satellites like the Gravity Probe B that costs $750 million and the detection of angular changes in gyroscopes which are around one degree every 100,000 years approximately.

Nevertheless, the universe has many naturally occurring gravitational laboratories that scientists can observe and see Einstein’s predictions come to life.

Evidence of frame dragging has been detected by scientists on a much larger scale with the help of a radio telescope and a pair of stars whizzing around each other at impossibly fast speeds.

During Newton’s time, these stars would have confused the astronomers would have required Einstein’s general theory of relativity to explain their trajectories.

General Relativity is the foundation of modern gravitational theory. It helps explain the motion of stars, planets and satellites and also the flow of time. The frame-dragging is one of the lesser known predictions of the theory. The faster an object spins, the more powerful the drag, depending on the mass of the body.

The frame dragging is caused by white dwarf stars can be around a 100 million times as powerful as the Earth’s.