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Nasa scientists find massive hole on Sun, 20 times larger than Earth - Times of India

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[ad_1] Nasa scientists have spotted a massive black region on the Sun, which is 20 times larger than Earth. The appearance of the “coronal hole” has prompted US federal agency National Oceanic and Atmospheric Administration (NOAA) to sound out an alert for geomagnetic storms as the gaping hole is unleashing 1.8 million mile-per-hour solar winds towards Earth , which will impact the planet on Friday. Scientists are closely monitoring the situation to see if the winds will impact the Earth's magnetic field, satellites and technology. This was the second hole to appear in one week. Both holes were captured by Nasa’s Solar Dynamics Observatory, which studies the Sun. The latest hole was discovered on March 23 near the Sun’s South Pole. The “hole” isn't really a hole, but a large region much cooler than the rest of the Sun, causing it to appear black. “Coronal holes are magnetically open areas that are one source of high-speed solar wind. They appear dark when viewed in many ...