NASA Discovers Strange Square 'Hole' in the Sun

NASA's Solar Dynamics Observatory (SDO) has found a square "hole" on the surface of the sun.

The hole can be seen as the sun rotates and appears as a black pit in the center of Earth's star, The Daily Mail reported

The space agency captured a video of the hole, which flickered and sparked as it rotated past the camera. The footage was taken from May 5th to May 7th.

The dark square is known as a "coronal hole", an area where solar winds stream out of the sun at incredible speeds, The Huffington Post reported.

The coronal hole appears dark in the video, since there is less material emitting light in the ultraviolet range of the spectrum, which was used to make the video.

"Inside the coronal hole you can see bright loops where the hot plasma outlines little pieces of the solar magnetic field sticking above the surface," SDO officials wrote in the video description. "Because it is positioned so far south on the sun, there is less chance that the solar wind stream will impact us here on Earth."

The brightest spots in the images are usually at the top of the magnetic loops, or arches, The Daily Mail reported.

A coronal hole is a large area in the corona, which is cooler and less dense than its surroundings. These holes could appear at any time during the solar cycle. However, they are spotted more often during the declining phase of the cycle.

While the hole was observed over two days, NASA was able to condense the footage into 14 seconds, Sky News reported.

Since the holes can take different shapes and sizes, this coronal hole's shape happened only by chance.

The SDO is part of a fleet of spacecraft observing the weather on the sun, The Huffington Post reported.

The sun experienced its peak activity during an 11-year solar weather cycle in 2013.

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Nasa, Sun
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