Astronomers observe star speeding close to the massive black hole at the centre of the Milky Way for the first time. It was accelerated to a speed of 8,000 km/s, or 2.7% of the speed of light, causing it to be subject to effects predicted by Einstein’s theory of general relativity.

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Astronomers observe star speeding close to the massive black hole at the centre of the Milky Way for the first time. It was accelerated to a speed of 8,000 km/s, or 2.7% of the speed of light, causing it to be subject to effects predicted by Einstein’s theory of general relativity.