Earth is a little closer to the supermassive black hole in the center of the sky than we expected.
NAOJ
Is at the center of our galaxy The navel is called A *. It is about 4 million times the mass of our Sun.
Great news! Scientists have discovered that we are closer to 2000 light-years than the sound A *.
This does not mean that we are currently facing a black hole. No, this is the result of a more accurate model of airwaves based on new data.
For the past 15 years, Vera, a Japanese radio astronomy project, has been collecting data. Using a technique called interferometry, VERA Collected data from telescopes throughout Japan and combined them with data from other current projects to create the most accurate map of the airwaves to date.
Indicating the position and velocity of about 99 special points in our galaxy, Vera concluded that the supermassive black hole Sagittarius A at the center of our galaxy is actually 25,800 light-years from Earth – about 2,000 light-years. Near. Which we used to believe.
In addition, the new model calculates an Earth that is growing faster than we believe. Older models reached Earth speeds of up to 220 kilometers (136 miles) per second, orbiting the center of the galaxy. In Vera’s new model we are moving at a speed of 227 kilometers (141 miles) per second.
not bad!
Vera is now hoping to increase the accuracy of her models when she launches the EAVN. (East Asian VLBI Network) and is collecting data from large suites of radio telescopes located in Japan, Korea and China.
