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Fastest star in the galaxy

   Recently, German astronomers discovered the fastest-moving star on record near the center of the Milky Way.

  In general, it is difficult to find new stars near Sagittarius A*, the black hole at the center of the Milky Way, because the closer you get to the center, the denser the stars and the harder it is to identify them. This time astronomers identified five new stars there using the Very Large Telescope in Chile.

  Among them is S 4714, whose elliptical orbit is only 12.6 times the distance from the Sun to the Earth at its closest point to the central black hole. It travels at nearly 24,000 kilometers per second, or 8 percent of the speed of light.

  Looking at the sky from such a star should be very fascinating. The sky will be filled with bright stars. You can also see the massive black hole and the bright accretion disk formed by the material falling into it. In particular, you can also observe the strange time and space drag effect. General relativity predicts that when a celestial body moves at a fast speed, it will drag the surrounding space-time, creating a vortex-like structure, just like you stir the batter with a chopstick; and the light that would have traveled in a straight line, in such a space-time When propagating, it also takes a tortuous path.



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