The angular size of the black hole at the center of M87 is about 10 microarcseconds, or 2.8 x 10-9 degrees. Ignoring atmospheric seeing, what would be the diameter (in meters) required for a single telescope to resolve an image of this black hole in the near-infrared (wavelength = 1 micrometer)?
Stellar evolution
We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.
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The angular size of the black hole at the center of M87 is about 10
microarcseconds, or 2.8 x 10-9 degrees. Ignoring atmospheric seeing, what
would be the diameter (in meters) required for a single telescope to resolve an image of this black hole in the near-infrared (wavelength = 1 micrometer)?
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