Nasa has discovered a 75000 mile-wide hole in the sun
Jul 15 2017
The sunspot, named AR2665, is 74,560 miles (120,000 kilometres) wide and big enough to be seen from Earth. To help viewers perceive the vastness of the sunspot, NASA has added a small black circle at the bottom of the screen showing the approximate size of Earth.
According to IflScience, sunspots are dark regions which are cooler than the surrounding areas and are known to produce solar flares including releasing a deadly ray of radiation headed towards our planet. "This sunspot is the first to appear after the sun was spotless for two days, and it is the only sunspot group at this moment", NASA notes.
Since the very beginning of the research, scientists came to believe that these Sunspots are relatively common, but as the sun approaches the solar minimum, the least active part of it is the 11-year cycle, the frequency of sunspots decreases.
The SDO images here compare the sun on March 20, 2017, and February 27, 2014, during the last solar maximum when the sun sported numerous spots. For hundreds of years, researchers have continuously tried to understand the largest star in the solar system and this has been one of the greatest priorities for the space agency. Because of the drop in solar activity, the sun was speckle-free for two days before this swirling sunspot appeared.